WARNING: This product contains nicotine.
Nicotine is an addictive chemical.

WARNING: This product contains nicotine. Nicotine is an addictive chemical.

Uwell Caliburn Bar B6000 | Review

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more›

Uwell has just released its first CALIBURN disposable.

The Caliburn Bar B6000 has the signature style of the Caliburn Koko series, compact and striking. It’s also referred to as the ‘CaliBARn’.

It features a 1.2Ω mesh coil, 600mAh battery, 12ml of juice, and can deliver up to 6000 puffs per bar.

The B6000 is rechargeable via USB-C. It also has power and e-liquid indicator lights.

The Uwell Caliburn B6000 is available in either 2% (20mg) or 5% (50mg) nic strength and comes in 18 flavors.


  • Unmistakable Caliburn design
  • Extremely compact
  • Lightweight
  • Power & E-liquid indicators
  • 6000 puff count
  • Fantastic flavor
  • Smooth draw
  • Consistent vape throughout
  • Good battery life


  • No adjustable airflow 
  • MTL draw might be a little loose for some

The Bottom Line

The Caliburn Bar B6000 is an extremely impressive disposable. It delivers an almost flawless vape experience in such a compact design. The flavor range is authentic and produced excellently by the 1.2Ω mesh coil. It doesn’t have adjustable airflow. So those looking for a tight MTL draw are best looking elsewhere. For everybody else, the ‘CaliBARn’ is highly recommended.

Uwell Caliburn Bar B6000 - Review

Uwell Caliburn Bar B6000 Specifications

  • Size: 73mm x 48mm x 18mm
  • Battery Capacity: 600mAh
  • Max Puffs: 6000
  • Nicotine Strength: 2% (20mg), 5% (50mg)
  • Prefilled Capacity: 16mL
  • Coil: 1.2Ω mesh
  • Airflow: Non-adjustable
  • Charging: Type-C
  • Battery level indicator
  • E-liquid level indicator
  • 18 Flavors

Uwell Caliburn Bar B6000 Flavors

  • Apple Blueberry Raspberry
  • Blue Razz Lemonade
  • Blueberry Bubblegum
  • Cappuccino
  • Delicious Apple
  • Juicy Peach
  • Mamba
  • Mango Pineapple Peach
  • Mango Strawberry
  • Mixed Berry Ice
  • Peach Soda
  • Raspberry Honeydew Melon
  • Raspberry Watermelon
  • Strawberry Gummy
  • Sweet Menthol
  • Sweet Rainbow
  • Tropical Twist
  • Watermelon Ice
Uwell Caliburn Bar B6000

Design & Build Quality

The Caliburn Bar B6000 has exactly the styling and build quality I’d expect from a company like UWELL.

The B6000 looks remarkably similar to the latest Caliburn Koko, with the same form factor and precisely the same side panels.

Where it does differ is the main body, which is made from translucent plastic. This makes it very lightweight and pocket-friendly for a disposable.

This is further helped by the sheer compact size of the B6000. I’m amazed that Uwell managed to fit 12ml of juice and a 600mAh battery in there.

Uwell Caliburn Bar B6000 Mouthpiece

I’d say it’s probably the most compact and lightweight disposable I’ve seen with this capacity.

The translucent frame of the B6000 is color-tinted to showcase the flavor profile within. Each color looks pretty striking without being too flashy.

The mouthpiece also follows suit, tinted in the same color. It’s a nice, smooth mouthpiece, as you’d expect from a Caliburn device.

Uwell has opted to keep the branding front and center on the side panels. So, the flavor profile is printed along the side edge, which is fine.

Uwell Caliburn Bar B6000 USB Port

On the base of the B6000, you will see the USB-C port for charging and the airflow hole. Sadly, there’s no adjustable airflow – more on this later.

On the top of the device is a plastic lanyard loop, just like on the Koko.

Uwell has implemented a dual-light system in the B6000. There is an LED indicator for the battery and another for the e-liquid level.

You can see the symbols on the device’s front panel: Liquid on the left and Power on the right. The LED lights sit beneath the plastic and shine through.

When you take a puff, the e-liquid indicator will light up to show you the remaining juice status.

Then, when you stop, the power indicator will flash for about a second to show the battery status. (I wish it flashed a little longer).

Uwell Caliburn Bar B6000 Light

Both lights have 3 steps designated by the following colors:

Indicator light

Green = 60-100%

Blue = 30-60%

Red = 0-30%

The percentages are the same for either the E-liquid or Power.

The power indicator will also flash the appropriate color when charging to show the charge status.

While the gauges are not as intuitive as a screen, it’s still a handy addition.

Overall, I’m thrilled with the design and build quality of the Caliburn B6000. It does a great job of retaining that Caliburn styling.

It’s fun, without being too loud, and is incredibly compact and pocketable.


Uwell Caliburn Bar B6000 Cool Mint

Cool Mint

Cool Mint is a soothing and refreshing flavor, offering a pure, crisp, minty sensation. It’s like a breath of fresh, chilly air, perfect for those who enjoy a clean and invigorating mint taste without overwhelming sweetness.

Uwell Caliburn Bar B6000 Grape Ice

Grape Ice

Imagine sun-ripened purple grapes, freshly picked and plunged into a bath of icy menthol. This flavor offers a sweet grape taste with a cool, refreshing menthol twist reminiscent of a frozen grape treat on a hot summer day.

Uwell Caliburn Bar B6000 Lemon Mint

Lemon Mint

It is a delightful fusion of zesty lemon and fresh mint. This flavor balances lemon’s sharp, tangy essence with a subtle hint of mint, creating a refreshing, light taste that invigorates the senses.

Uwell Caliburn Bar B6000 Melon Coconut

Melon Coconut

Transport yourself to a tropical paradise with this juicy melon and creamy coconut blend. The fruity-island sensation combines the sweetness of melons with the exotic, rich taste of coconuts, offering a vacation in every puff.

Uwell Caliburn Bar B6000 Mixed Berries

Mixed Berries

Dive into a basket of assorted berries with this flavor. It’s a harmonious mix of sweet and tangy berry flavors, creating a juicy, mouthwatering experience that berry lovers will adore. There is a blast of cooling with this one.

Uwell Caliburn Bar B6000 Peach Soda

Peach Soda

Savor the taste of Southern-style peaches infused into a fizzy, bubbly soda. This flavor captures the essence of ripe, juicy peaches with a playful carbonated twist reminiscent of a refreshing peach soda on a warm day.

Uwell Caliburn Bar B6000 Peach Watermelon

Peach Watermelon

A delightful summertime mashup of fruits. The sweet, lush peaches perfectly complement the juicy, refreshing watermelons, creating a harmonious blend that’s both thirst-quenching and delicious.

Uwell Caliburn Bar B6000 Sour Apple

Sour Apple

Enjoy the splendid taste of candied, tart Granny Smith apples. This flavor captures the essence of a sour apple candy, offering a perfect balance of tartness and sweetness that’s both exhilarating and satisfying.

Uwell Caliburn Bar B6000 Strawberry Banana

Strawberry Banana

Indulge in the classic smoothie blend of ripe strawberries and creamy bananas. This flavor offers a comforting and familiar taste, combining the sweetness of strawberries with the smooth, velvety texture of bananas.

Uwell Caliburn Bar B6000 Watermelon Ice

Watermelon Ice

Enjoy the crisp, refreshing taste of watermelons with an icy twist. This flavor captures the essence of fresh, juicy watermelons, cooled down with a hint of menthol for a chilling and thirst-quenching experience.

Uwell Caliburn Bar B6000 White Gummy

White Gummy

Relive your childhood memories with this nostalgic white peach gummy candy flavor. It offers the sweet, fruity taste of white peaches in a gummy candy form, delivering a delightful and playful vaping experience.

Uwell Caliburn Bar B6000 Strawberry Kiwi

Strawberry Kiwi

A classic fruity combination of ripe and succulent strawberries paired with tangy kiwis. This flavor combines the sweetness of strawberries and the tart taste of kiwis, creating a perfectly balanced and refreshing vape.

Uwell Caliburn Bar B6000 Dragon Fruit Berry

Dragon Fruit Berry

This exotic concoction marries dragon fruit’s unique, slightly sweet taste with a medley of juicy, sweet berries. The result is a tantalizing and vibrant flavor profile that’s both exotic and familiar, perfect for adventurous palates.

Uwell Caliburn Bar B6000 Blue Razz Ice

Blue Razz Ice

An invigorating blend of blue raspberry with a frosty menthol finish. This flavor combines the tangy and sweet notes of blue raspberries, coated in a layer of refreshing icy menthol, creating a thrilling and vibrant vaping experience.

Uwell Caliburn Bar B6000 Pineapple Mango

Pineapple Mango

This tropical delight combines the tangy sweetness of pineapples with the luscious taste of mangos. It’s a fruit-filled escapade that brings the vibrant flavors of the tropics straight to your senses.

Uwell Caliburn Bar B6000


I’m glad to report that Uwell has taken all of its experience creating excellent pod vapes and coils and implemented them in the Caliburn Bar.

The 1.2Ω mesh coil delivers excellent flavor and heats up instantly. In fact, I think it might be one of the fastest-firing disposables I’ve used.

The auto-draw trigger is also pretty flawless, as you’d expect from Uwell.

Fortunately, we got to test the 15 different flavors from the range. They were all very impressive to my critical palate.

A few of them lean heavily on the cooling for my liking, like the Mixed Berries and Cool Mint.

However, the rest are perfectly balanced, and all of them taste very authentic.

Uwell Caliburn Bar B6000

The Pineapple Mango was a real treat and probably one of the most natural I’ve tasted. The Peach Watermelon was also fantastically juicy and mouthwatering.

The Lemon Mint was also a refreshing delight and something I’d never tried before.

One slight drawback of the B6000 is the lack of adjustable airflow.

It delivers a medium to loose MTL draw. It’s very much akin to that of the Caliburn A series.

I would’ve preferred a slightly tighter draw, but I soon got used to it during my testing.

The juice and battery indicators work well and seem to line up with what’s remaining in the device.

Uwell Caliburn Bar B6000

Although the way the lights flash does mean it’s not such a stealthy device. Unless you fully cover both lights with your palm.

It’s also worth noting that the vape is consistent throughout, with no drop in performance, even when the battery gets low. 

We measured the capacity of the internal battery, which only came out to around 500mAh. It’s a little shy of the advertised capacity. But battery life was still good on the device.

The charge rate measured an average of 0.5A, taking approximately 60 minutes to fully charge. Which is respectable for a disposable.

Through my testing, we got incredibly close to the 6000 puff count. Which is pretty impressive for such a compact device.

Overall, I love the pocketability and design of the B6000. However, I’m equally impressed by the vape quality they deliver.

Uwell Caliburn Bar B6000


The Caliburn Bar B6000 is definitely worthy of the Caliburn name.

Uwell has done a fantastic job with their first disposable. Taking everything they do well with their pod vapes and implementing it alongside some banging flavors.

The B6000 delivers excellent flavor and a super smooth (loose) MTL draw.

Another plus point is that it’s available in both 20 and 50mg – which makes me very happy.

While the battery and juice indicators are not as good as a designated display, they still work well. The only thing it’s lacking is adjustable airflow.

If you are looking for a super compact but high-capacity disposable, the B6000 is an excellent choice – highly recommended.




The Caliburn Bar B6000 is an extremely impressive disposable. It delivers an almost flawless vape experience in such a compact design. The flavor range is authentic and produced excellently by the 1.2Ω mesh coil. It doesn't have adjustable airflow. So those looking for a tight MTL draw are best looking elsewhere. For everybody else, the 'CaliBARn' is highly recommended.
Danny Blanton
Danny Blanton
Danny Blanton, a seasoned writer with a decade of industry experience, offers expert reviews on vaping products and cannabis topics, ensuring our readers receive accurate, up-to-date, and valuable insights.
CBDfx Gummies High-Potency 1500MG CBD

Related Articles

Best Vapes

Learn More About Vaping

The Caliburn Bar B6000 is an extremely impressive disposable. It delivers an almost flawless vape experience in such a compact design. The flavor range is authentic and produced excellently by the 1.2Ω mesh coil. It doesn't have adjustable airflow. So those looking for a tight MTL draw are best looking elsewhere. For everybody else, the 'CaliBARn' is highly recommended.Uwell Caliburn Bar B6000 | Review