(150 customer reviews)

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Hamilton Devices is proud to present our KR1 – the world’s first 2-in-1 vape cartridge and concentrate bubbler. It’s hard to believe looking at its small size that the KR1 cart packs a powerful punch! This dual-purpose bubbler allows you to interchange between your favorite 510 thread cartridges or a wax coil. It’s perfect for on the go or a sesh with friends!

This battery is engineered specifically for CCELL® cartridges, but will also work with most 510 thread cartridges. Please see below for product details:

  • Button activated
  • High Quality Circuit Board
  • PCTG Terpene Resistant Housing and Glass Bubbler
  • Power: Low = Blue (3.2V), Medium = White (3.6V), High = Red (4.0V)
  • Battery Capacity: 500mAh
  • Size: 47.5mm (L) x 23mm (W) x 156.6mm (H)
  • Color: Brushed Gunmetal
  • Package: 1 Wax coil, USB Charger, 2 O-rings, Housing Unit and Glass Bubbler

*Cartridge not included

MAINTENANCE TIPS: Any device dealing with oils has the potential to leak. Regular cleaning will keep the device at its optimal performance.

RECOMMENDED CLEANING: 1-2 times per cartridge change or depending on usage. Please use a Q-Tip and rubbing alcohol.

RECOMMENDED BUBBLER CLEANING: Clean with an alcohol swab or a Q-Tip and rubbing alcohol. Remove o-ring, cover the holes, and shake with rubbing alcohol. Immediately after, shake with dish soap and water and dry accordingly.

RECOMMENDED PLASTIC HOUSING CLEANING: Clean with an alcohol swab or a Q-Tip and rubbing alcohol. DO NOT submerge the housing unit in rubbing alcohol. Immediately after, clean with dish soap and water then dry accordingly. DO NOT USE ACETONE OR SOLVENTS FOR CLEANING, ONLY RUBBING ALCOHOL.

SKU: KR1-BG Categories: ,

150 reviews for KR1

  1. Jeremy (verified owner)

    I love this piece. I would give it 5 stars if it was all glass.

  2. Kyle (verified owner)

    I don’t really know how just a little bit of water makes my cart hit so much more smoothly. I am not having nearly as many issues with clogs as I did with my old battery too. Definitely recommend.

  3. Anonymous (verified owner)

    Love the device! I wish there was an easier way to clean but otherwise it’s a fun travel sized bubbler.

  4. Timothy (verified owner)

    So very cool.

  5. Anonymous (verified owner)

    very easy to use and works

  6. Anonymous (verified owner)

    Neat device. Sometimes water gets into the tube.

  7. Anonymous (verified owner)

    Absolutely a banger of a get

  8. Anonymous (verified owner)

    Not quite what I thought it would be, not much different then a Yocan

  9. Kayleigh F. (verified owner)

    one of the best devices i’ve ever bought. the only bad thing i’d have to say there is, is that you get too much smoke if you hit it too hard, but that’s something you just have to learn to control yourself. still one of the best things i own.

  10. Robert I. (verified owner)

    Best of the best! Superior quality and performance.

  11. andrew D (verified owner)

    Worth every penny. Love this thing 😀 thank you guys. Battery last for a long time. Works pretty flawless. Just hit it slow.

  12. David (verified owner)

    Easy to use out of the box. Well built. I’m very impressed with the KR1.

  13. Samantha C. (verified owner)

    Love this device!! I use it everyday, it’s great for cold start dabs too. I highly recommend

  14. Betty O. (verified owner)

    Cleaner smoke & way cooler. Love it!

  15. Anonymous (verified owner)

    I love it, however I wish there was more R&D on the “Bubbler” portion of it, as you have to fine tune the water addition. I wish there was a dual-bubbler, maybe in later designs.

  16. Stephanie (verified owner)

    This is the best device I’ve ever owned. Makes every hit so smooth.

  17. Camilo Andres Mosquera Eraso (verified owner)


  18. Paul (verified owner)

    This is the 3rd one I have purchased. Think this is a terrific product. Works well. Leaks a little but you can limit that. Less w bowel. I had only one issue and that was one battery stopped working after a short usage. It took charge but then wouldn’t draw. Not sure if its a defective one. Is this a common problem? The base conx is much better on this latest one. Is it possible to make the bowel a little bigger? If the base is same size it could be a little wider w more screen area and should work size wise. Would make it easier to work w, so it has a larger circumference w bigger screen. Think the unit could handle it. Maybe just a change of bowels on atomizer would work.

  19. Anonymous (verified owner)

    Love this thing, it’s hard to put down!

  20. Cherylle P. (verified owner)

    This bubbler allows me to medicate unobtrusively as often as I need with no cough. RECOMMENDED

  21. Cathy O. (verified owner)

    I have bought 3! Love it ???? I gave 1&2 away and need to order another. Maybe I could get a discount ☺️

  22. Eric Roach (verified owner)


  23. Michael M. (verified owner)

    Perfect Hits with wax or pods very nice sturdy machine

  24. Kris (verified owner)

    Fast shipping, lovely device, fits my carts great and works for concentrates if I want. The built in bubbler is perfect for cooling stuff down a tad.

    I think I prefer my vessel a little, though. It’s more portable and a smoother hit.

  25. Jonathon C. (verified owner)

    Very thoughtful design

  26. Anonymous (verified owner)

    Very cool works great

  27. Tristan (verified owner)

    Works well with vape cartridges not as great with the ceramic bowl

  28. Jeffery Owens (verified owner)

    This thing is rad! About to order another for my friend. Thanks!

  29. Michael (verified owner)

    This is by far the best investment I’ve made in smoking accessories. Highly recommended!!!

  30. Anonymous (verified owner)

    Good experience.

  31. David (verified owner)

    Seriously one of the best portable vapes I’ve ever used.

  32. Christopher G. (verified owner)

    Awesome product ❗

  33. Monique Kabage (verified owner)

    Thing is awesome definitely worth the buy one coil was messed up in my order. Battery life is booty wish is was 1000mah instead of 500 doesn’t last very long. Coils need to be cleaned just about every time u pack it but still worth the buy

  34. Pat


  35. ricky w. (verified owner)

    it was good besides one that came faulty, but I just had to send it back in besides that very good

  36. Anonymous (verified owner)

    Saw this and had to give it a try. Was not let down smooth, not harsh very cool bubbler I use cartridges and it works great. If you like pulling and blowing clouds like myself I highly recommend great work Hamilton will buy future products.

  37. John R Longhi (verified owner)

    Amazing…I wanted a device such as others did that took the harshness from vaping…And this device measured beyond my expectations…I did make a few modifications to perfect it! But i still give it a 9 out 10 which is the highest I go because nothing or no one is perfect!

  38. John Longhi (verified owner)

    I would give it a 10 out of 5 if i could because its the first of its kind..So it does have lil bugs but to me they are just because its the first of its kind…This thing works amazing…I bought it to take some of the harshness out of my puffs and it has taken that to a new level! Love it ! I recommend it! I bring it everywhere I go and I make sure to show it off and ppl love it! They think the idea is awesome…simple…affordable…and once they use it ….it sells it self right there… Thank you for making this product as simple and as effective as it is ! Cause its not complex but its design works amazing!

  39. Anonymous (verified owner)

    Best battery I’ve gotten so far.

  40. Audrey (verified owner)

    Love this device (KR1). The hits are smooth. The battery charge lasts a fair amount time between charges, and it’s easy to clean. The packaging is beautiful, and it was shipped securely. Would definitely recommend.

  41. Cristian Romero (verified owner)

    Beautiful ????

  42. Anthony’s Vape Shop (verified owner)

    Awesome!! Works and looks great

  43. Anonymous (verified owner)

    good elegant

  44. Anonymous (verified owner)

    Customers loved this, will order more.

  45. Jonathan

    Most definitely cools down vape and filters. I smoke all the time and I keep this on me all the time.

  46. Andrew (verified owner)

    The Apple Store of high quality devices.

  47. Anonymous (verified owner)


  48. Anonymous (verified owner)

    Love the kr1. Pretty cool device.

  49. Mary

    I love it. I was wondering if there’s a cleaning kit

  50. Leah

    love it! so simple and unique

  51. Haitham (verified owner)

    Amazing product

  52. Sherry

    I absolutely love this bubbler. I want to take it EVERYWHERE! Can you make a case for it? Something I can put it in to carry in my purse?

  53. david martino (verified owner)

    the best device ever

  54. Adam Rice (verified owner)

    Terrific device, 10/10 recommended

  55. Anonymous (verified owner)

    The best vape device I own love the bubbler just wish there was a water line marking. But overall happy. Also ordered extra cartridges for wax i have yet to use.

  56. Jbrown (verified owner)

    Just needs a little more glue at the seem of the tank and a cleaning kit add on would be nice.

  57. Anonymous (verified owner)

    I’m satisfied with how it works but when using dab tool you have to clean more often

  58. William Priester

    Good. & Easy to use, & clean.

  59. Anonymous (verified owner)

    Hard to clean but amazing product

  60. Anonymous (verified owner)

    Great companion for my cartridge!

  61. Liz

    My favorite at home vape “rig”. Exactly what I was looking for. Customer service is amazing, mine had a defect, got my new one in 3 days!

  62. Anonymous (verified owner)

    Wonderful, easy to use, be sure to clean often!

  63. John Donnelly

    Great concept and product – one design flaw is the glass bubbler needs better protection when knocked over or dropped. I have broken two glass bubblers so far and it is simply a pain to get replacements. Perhaps a shield or cone to protect the bubbler – something from silicone should work – even a slip on sleeve.

  64. Fatima

    Reaching out because I was a bit curious on how you know when the battery is low? Does it just die on you? Everything about this device is amazing bought it yesterday and this is crazy!! I’m still hitting and it’s like a mini travel device that you can hit on the go

  65. Charles (verified owner)

    Nice water vape pipe to mellow out heat.

  66. Lisa M. (verified owner)

    This bubbler is the best investment I’ve made. It is so easy to use but it delivers the most concentrated but very very smooth. The only thing is you have to keep the bowl clean and it doesn’t fail.

  67. Peter B. (verified owner)

    As advertised, works right out of the box, a much safer way to vape with a stronger taste profile than a pen can offer.

  68. James (verified owner)

    Works great! Game changer for Vape THC. My order was processed immediately and shipped to me within days!

  69. William Robinson (verified owner)

    Amazing device, have recommended it to a couple of friends and they plan on purchasing one of their own. The bubble makes a huge difference with the carts, and the wax coil is also pretty impressive.

  70. William R (verified owner)

    This device is amazing, worth every penny. I even sold a buddy on it, plans on purchasing one next week. Thank you for your hard work. Any chance I could get some free coils for the referal? lol

  71. jkangas03 (verified owner)

    this thing pretty gas ngl

  72. Leslie Finch

    What a kick ass little device took me a minute to figure it out, but once I did wow I love it.. And the bubbler love it when you add water it makes every rip so much smother.. Good investment definitely gonna pass the word I love new toy!!!????

  73. barneypete

    Another better than a small pen that gets too hot…very nice.

  74. Veryl Harman jr

    Love the product. Hits nice and smooth. Found my new favorite piece.

  75. Charles teague

    Greatest gadget 69 yr old stoner Where were these things 40 yrs ago

  76. Ulises Sanchez-Vivas (verified owner)

    Love it, really puts in work

  77. Thomas Norris

    I love this device. I’ve always wanted a bubbler that deals in carts and concentrates. Amazing job Hamilton team!

  78. Hippy Dude

    Wow! This device ROCKS! I’ve owned a lot of different dab rigs and vape paraphernalia but this one is the best. For carts or concentrates, it’s the best I’ve seen and easy to carry.

  79. Justin (verified owner)

    Ver ver nice

  80. Dazz (verified owner)

    KR1 is great for use with carts, and its not bad with concentrates as long as you pre-heat and don’t put too much in, and you have to hit very very slow and soft – if you hit hard it will result in most of your concentrate flying up all over and sticking to side of the main case. if you don’t pre-heat and hit real slow you won’t get much of a hit. I love my KR1 – worth the money – i was a bit concerned however that on the device instructions it has a warning that the device contains chemicals known to cause cancer, birth defects, or other reproductive harm. That warning was not on the website description when i ordered it. I think that warning should be on the website so people know this before ordering. I almost sent mine back due when i read the warning, but im old and probably won’t live much longer anyhow so Im throwing caution to the wind,

  81. dylan weber (verified owner)

    love the product, worth the price

  82. Danial (verified owner)

    My first vape bubbler so I don’t have a lot of experience but I do love everything about the KR1. Bigger hits less heat. Fun to use. Dig the leds!

  83. Matthew P. (verified owner)

    Very freshing way to hit a cart! Cool lighting effect and hits hard! Cannot wait to teat her our on some concentrate.

  84. Suraj (verified owner)

    The seal is properly done with the carb. Not many products on the market that can compare. I’m giving a 4 because I would’ve preferred the option to use the device at a voltage below 3 volts or the option to choose a battery which could support that function. Cleaning is just a bit tedious but when is it not. After a couple of weeks of consistent use I want to say: Great device, thoroughly satisfied, and happy with the purchase.

  85. Joseph P. (verified owner)

    If you want a bubbler for your cart or just want to be able to dab on the go this is the device you want!!!

  86. Scott H. (verified owner)

    Product seems to do what it promises. Takes away the burn but still has to be used on the low setting. Shipping was fast. It seems like it’s a good quality item. So far so good!

  87. Donna C. (verified owner)

    The KR1 really creates smooth hits.

  88. Timothy Pourner (verified owner)

    Nice and smooth love it

  89. Timothy Rush

    I got this from a local shop as I was looking for something that would be unique and offer a different experience, and honestly I’m super impressed! Contrary to first glance, it’s actually very easy to clean and use. And the vape from it is so smooth and really preserves the flavor. It’s so good that even my boyfriend, who doesn’t even like vaping all that much, got one for when he does it on occasion.

  90. John Paul

    So far so good! Good volume, and really smooth hits.

  91. Sean B. (verified owner)

    Biggest hits from a Cart!!!

  92. kreationz357

    Other than a fear of breaking the glass bubbler during my daily travels, I ABSOLUTELY LOVE MY NEW BEST FRIEND!!!

  93. Dalon Gray

    Device is great. A real simple portable mini rig if you would. Had an issue with mine hitting within a year and Hamilton’s customer service got back to me within 24 hours and offered a replacement to be sent out within the work week. Top notch customer service. Customer for life

  94. Jim

    Love this thing! Hits way harder than regular pens. The wax coil part is a little awkward to use. Cleaning is pretty simple with long q-tips/alcohol. There should be an auto shut off added to it.

  95. Benjamin (verified owner)

    Super cool device. Works as intended.

  96. Corey jeffrey

    i agree with one of the other comments. I wont lie i got my ass rocked on that first hit. I smoke a half cart a day. So cleaning sucks. Maybe dishwasher safe for us hard chilling stoners. While the battery charges. The coil for wax broke like a week into owning it. I love the breakdown. Kinda wish the plastic was glass. Over all very decent product.

  97. Christopher (verified owner)

    It’s awesome,hit hard great!

  98. Brian D. (verified owner)

    For the price it works. The concept is wonderful, with the carts it seems to be a hit or miss on it’s effectiveness. The wax/oil option rips, it will get you past where you were trying to go, the bubbler makes the taste perfect. I’m looking forward to the next upgraded model!!

  99. DrtyDave (verified owner)

    Just received my KR1 and let me say it is with out a doubt one of the finest vaping rigs for dabs, tons of clouds and a great high. It is worth every penny

  100. David Parker

    This allows you to take deep hits, on a low setting, which adds an incredible complexity of flavor to your medicated state of mind. I’m using a 510 of Banana Cream and it’s an entirely different experience. I’m waiting for the next generation, seriously this is a game changer.

  101. Maria D. (verified owner)

    This by far is the best vaping experience I have ever had. The KR1 is worth every penny

  102. Ml

    This is amazining. Worth every penny!!!

  103. Patrick (verified owner)

    Shipping was fast and the KR1 is awesome. Can pull a nice big cloud and taste amazing. I ordered 5 and gave them out to my friends they all love it! Highly recommend.

  104. Barry518

    This thing is Unreal! The best purchase I’ve made in a Long time. HIGHLY Recommend to Anyone looking for a small, smooth, convenient rig. Use for dabs and carts an Absolutely Amazing! Can’t exaggerate enough how perfect this rig is! And the customer service is amazing as well!
    Thanks again Hamilton Devices! Will Definitely continue to recommend this product, and this awesome company!
    You’re missing out if you don’t have one yet!

  105. Barry

    This thing is Unreal! The best purchase I’ve made in a Long time. HIGHLY Recommend to Anyone looking for a small, smooth, convenient rig. Use for dabs and carts an Absolutely Amazing! Can’t exaggerate enough how perfect this rig is! And the customer service is amazing as well!
    Thanks again Hamilton Devices! Will Definitely continue to recommend this product, and this awesome company!
    You’re missing out if you don’t habe one yet!

  106. Tracy J Johnson (verified owner)

    Absolutely love mine so I bought extra for birthday gifts.

  107. Paul (verified owner)

    This thing is so cool

  108. Aaron C. (verified owner)

    Ducking amazing! Absolutely amazing ????

  109. Ed

    The only flaw in the product is the plastic housing, which should have been made with glass as it is VERY hard to clean the vapor residue buildup.

  110. Chris Picou (verified owner)

    All I can say is Thank You God. This baby right here is THE TRUTH!!! Carts and Extracts? What!!! Shut yo mouth!!! I’m only talking about the best of the best. Do a dab or do a cart. You make the call and you won’t go wrong. Trust the 50 Year Old Stoner I ain’t got no reason to lie because I’m high.

  111. Gabby Leach (verified owner)

    I recently got into dabbing and the KR1 is great for that. Doubles as a cartridge vape and both work wonderfully.

  112. Daniel Torres (verified owner)

    Love it makes a wax lover enjoy it so much more

  113. Armando M. (verified owner)

    Vaping carts have never been so smooth! Love this thing! Its very portable and more convenient to use than other methods.

  114. Amanda (verified owner)

    Easy to use!!! Perfect for on the go!!!!

  115. Cory R. (verified owner)

    Ive tried multiple brands of vape pens and this one is my favorite so far

  116. Nicolas W. (verified owner)

    Product is amazing and woke flawlessly

  117. Steve W. (verified owner)

    Hits nice and the bubbler feature is amazing

  118. Anonymous (verified owner)

    Woah…. This thing is Amazing. I wish the voltage could be adjusted a little bit lower. But all in all this is a 10/10

  119. Davey Grohlton

    After months of use, I will give a review. There is a lot I like about this product and some things I do not like. The glass piece is nice, but the plastic piece it goes into is a headache. As you use your vape carts in this product, whatever resin(terps,oil,whatever) builds up on the inside of the plastic piece. Using alcohol becomes a must in order to get it clean, but even then a q-tip is still needed to scrub the insides. Good luck fitting a q-tip all the down into there too… One side is deeper than a q-tip is long, so you will more than likely have difficulty. I use tweezers to lengthen the q-tip so it can reach all the way down to scrub it. I found cleaning it DAILY to be the only way to keep the flavors nice and it working properly. If you are using D8 carts, DEFINITELY clean it daily or else that stuff becomes super harsh. Battery life is good and the bubbler part does really help with D8 carts, but I wish it was bigger. Cleaning it is a little bit of a PITA because its small. You cant just throw some alcohol in it and shake it around…. it HAS to be scrubbed with a q-tip too to remove that film off the inside. If you don’t mind daily cleaning, then this product is very nice.

  120. Daniel Lopez (verified owner)

    Such an amazing product and I can’t wait to put it to use

  121. Clarke Skowronski (verified owner)

    I love this rig. My son took the first one I ordered so I immediately had to order one again for myself. I own a lot of different smoke apparatuses this is hands down the best.

  122. D

    This thing rips I love it

  123. Brooks (verified owner)

    It’s really cool to have water filtration I’m a portably device like this. Fun to use and hits hard 🙂

  124. robrathge

    I have two of them and one is on me at all times.

  125. Anonymous (verified owner)

    if this had an optional glass instead of plastic top shell, it would truly be a 10/10 device, i had a bit of trouble getting it to fire at first, turned out some of my carts with a floating 510 pin didnt make good connection until i pulled them out a little. my other complaint is its too easy to block the air inlet with your finger while pressing the fire button. the light is also very bright, i just put a tiny piece of electrical tape over it. all in all a highly recommended device.

  126. Cara A. (verified owner)

    Loving the KR1! Comes in a beautiful, inky blue colored box with a gold Kraken design and lettering. Very easy to assemble and gives huge, tasty hits that are super smooth!

  127. Jason Z. (verified owner)

    Easy to set up and charge. Great product, I would recommend to anybody. It hits great, looks cool, and easy to store. Can’t say enough about it! If you’re reading comments to decide, just but it, definitely worth the money!

  128. Tom Hanks

    Works good. Been using for D8THC carts. Watch out for cart clogs as they can create back pressure that will shoot bubbler water onto cart side of plastic piece and into your mouth. Also, clean daily for best flavor. Def clean in between switching carts too as the water picks up the terpene flavor profile of whatever your smoking…. Found that out on Pineapple Express lmao. The carb hole is located in a junky spot IMO. It can be finicky to cover correctly and press the power button at the same time. Clearly you should handle both with your thumb, but the clear plastic part above the carb sits slightly higher than the metal battery side, so when you go the press the button and cover the carb at the same time, if your thumb gets onto the clear plastic piece, it interferes with your ability to properly use the carb. I find the “ridge” left by the clear plastic piece and always make sure my thumb is below it and that allows me the create a “closure” on the carb hole. If thumb goes onto clear plastic piece, the carb does not fully seal… or something like that and it usually causes the cart to clog. I like everything about this cart but the carb location. It just feels like it was added last second and it is the weak spot on this device.

  129. KenRawDoe

    Hands down the best investment I’ve ever made in smoking distallite cartridges! My mom was so impressed with the KR1 I bought her one also! Thanks Hamilton Devices you guys are awesome!!!

  130. Jerry Zamorano (verified owner)

    Love this thing perfect size and perfect hits depending on your temperature settings but man the KR1 Smacks

  131. talia (verified owner)

    amazing device and easy to use

  132. Manuel M. (verified owner)

    This thing is a game changer, bugger hits with no burn and it looks sick

  133. Erok

    Awesome product, especially for the price, compared to others. Smooth, and hits perfect. Love it!

  134. Thaddaeus Zehr (verified owner)

    So cool hits like no other

  135. Elexis Berry (verified owner)

    love it

  136. Julius A. (verified owner)

    I just ordered the KR1 because I’m so satisfied with the PS one

  137. Zachary J. (verified owner)

    I got this for my mother and she absolutely loves it! She highly recommends it!

  138. Lotus1197

    Purchased today from a local shop after seeing it on Reddit. So far i love it.

  139. Anonymous (verified owner)

    It works great just ordered a second one!

  140. Robert (verified owner)

    So far so good. Just received it today but I’m extremely satisfied as of right now. Haven’t tried a cartridge yet but tried it with some distillate and the hit was amazing. Hopefully there won’t be any issues in the future otherwise this is definitely worth the money.

  141. Anonymous (verified owner)

    Shipped fast and hits hard

  142. Krissy Lee (verified owner)

    Works awesome,as expected.super smooth hits.

  143. judson (verified owner)

    Great dual action portable rig. Blue setting is the best for taste and flavor. Battery life is great also

  144. Anonymous (verified owner)

    This shits on the puffco 1000000000% dont hesitate on buying ! About to buy multiple more !

  145. Clarke S. (verified owner)

    Works great.

  146. Jake M. (verified owner)

    Left a comment and posted y’all on my story and tagged 3 ppl lemme get the give away KR1 and I’ll do a review on my youtube channel let me know (also 10/10 with my red cube) insta _red5.7

  147. Ryan (verified owner)


  148. Anonymous (verified owner)

    Very quality product

  149. ernieluna1007 (verified owner)

    Great battery works amazing with carts Nice smooth cool vapes I use ice-cold water .. Visually cool and efficient .. one qucick second press produces great clouds

  150. Bryan Deyo (verified owner)

    Great battery! Smooth large draw, like the voltage settings and have already talked it up and shown people in the industry that are total believers.

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