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WARNING: Vaping products contain Nicotine, a highly addictive chemical - Health Canada
WARNING: Vaping products contain Nicotine, a highly addictive chemical - Health Canada

UWell Caliburn GK2 Device Unboxing + Review


Christopher Fournier


Sep 27, 2022

Woman holding the Uwell Caliburn GK2

Summary of Key Points:

  • The UWell Caliburn GK2 essentially marries the functionality of the Caliburn G2 to the shape and style of the Koko Prime.
  • The Caliburn GK2 features USB-C charging, adjustable airflow, and a 690mAh battery.
  • Fans of MTL or r-DTL vaping with salt nic e-liquids will find a lot to love about this compact and lightweight pod system, which offers great essential features in an affordable and portable package.

View the GK2 in 3D

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UWell’s Caliburn series is beloved by users who love versatile pod systems, but the Caliburn GK2 has a few new tricks up its sleeve. Has UWell ushered in a brand new era for one of its most popular product lines, or have they messed with perfection?

At U Vape, we know practically everything there is to know about UWell vape devices and the other brands we sell—so we’re happy to tell you more about this exciting offering and show you how it compares to others in the market. Read on to find out about the Caliburn GK2’s key features, how to use it, and whether it’s a product you should consider buying.

What’s In the UWell Caliburn GK2 Device Kit?

gk2 unboxing

The UWell Caliburn GK2 Device Kit comes with:

  • x1 UWell Caliburn GK2 Pod System
  • x1 UN2 Meshed-H 1.2ohm Caliburn G2 Coil (pre-installed)
  • x1 UN2 Meshed-H 0.8ohm Caliburn G2 Coil (spare)
  • x1 User Manual
  • x1 Type-C Charging Cable
  • x1 Lanyard

First Impressions of the UWell Caliburn GK2 Device

gk2 box

The first thing you’ll notice about the GK2 is that it looks quite different from other Caliburn series devices. In fact, its appearance is much more similar to that of the Koko Prime, with its buttonless ergonomic square design. However, there are a few visual elements that make it clear this is a different device: the interactive light bars on the curved glass panels are a neat touch that instantly gives this a cool cyberpunk-inspired look.

See Also: Other UWell Pod Systems

  • UWell Caliburn G
  • UWell Caliburn G2
  • UWell Koko Prime

Those light bars actually shine at different times when you’re using the device—letting you know when voltage is low, the circuit is open, and more. We’ll talk more about that when we get around to our experience of using the GK2.

The GK2 is also compatible with the Caliburn G2 Replacement Pod. There are two versions of this pod, each with a non-removable coil—it comes in 0.8ohm or 1.2ohm options.

Since the first two of those are included in the kit, you’ll have a fair amount of control over your experience right out of the box. But it’s nice to know you can have even more if you want.

Charging the UWell Caliburn GK2 for the First Time

UWell is obviously a brand that cares about staying competitive, so it’s no surprise that they designed this device to use a USB-C charging cable. Most high-quality devices offer USB-C charging now. In the Caliburn GK2’s case, this allows you to bring its 690mAh battery from totally dead to usable in just 30 minutes.

Preparing the Pod in the UWell Caliburn GK2

gk2 bottom view

The 2ml e-liquid pods in the GK2 are easy to fill and install. Just like previous Caliburn models, the pods are fillable from the top (even with the pods still installed in the device) and have a generous window so you can view the juice inside.

There’s an air release valve as well, which helps prevent you from overfilling the pods. Little touches like these help explain why UWell has become such a dependable brand for so many vaping enthusiasts and people transitioning away from traditional tobacco products—this is obviously a company that cares deeply about the experience users have with their products.

Just like with other pod systems, you’ll want to leave your pod alone for 5-10 minutes after filling it up with a new coil inside. This allows the e-liquid to saturate the coil properly and prevents premature burnout.

Okay, ready? Now it’s time to start vaping with the GK2.

Using the UWell Caliburn GK2 Vape Device

hand holding gk2

The UWell Caliburn GK2 is a direct draw device (in case its total lack of buttons wasn’t a dead giveaway). Here’s what you need to know about using it:

UWell Caliburn GK2 Airflow Controls

The Caliburn GK2 lets you customize airflow with a small wheel built into the pod. By playing with this feature, you can configure the GK2 to support either MTL or r-DTL vaping—making it a fairly versatile little device.

UWell Caliburn GK2 Device Battery Life & Performance

690mAh isn’t huge for a battery in a compact pod system—but with an output of 18W, it’s enough to last for around seven hours. That gives you plenty of time to enjoy your favourite salt nic e-liquid flavours. Personally, we’re big fans of Ice by Suavae, Blue Raspberry by Lemon Drop, and Double Barrel by Blackwood.

As for using the GK2, it’s a simple and straightforward experience—much more so than its futuristic design might suggest. We do enjoy seeing the bars on the side light up to give us different signals, though. The bars will glow to indicate:

  • Low voltage
  • An open circuit
  • Overtime use
  • Cartridge installation

UWell Caliburn GK2 Device Key Features

Here are the vital specs for the Caliburn GK2:

  • Dimensions: 72.2mm x 46.6mm x 16.3mm
  • Battery Capacity: 690mAh
  • Output: 18W
  • e-Liquid Volume: 2ml
  • Charge Type: USB-C

UWell Caliburn GK2 Device Price

There’s more good news when it comes to the price of the GK2, which is less expensive than both the Caliburn G2 and the Koko Prime. Since the GK2 is essentially a combination of these devices that offers the best of both worlds, we call this a pretty worthwhile bargain on a great vape.

Final Thoughts on the UWell Caliburn GK2 Device

person holding gk2

All the comfort and convenience of the Caliburn G2 with the unique shape and style of the Koko Prime. Sign us up for this UWell all-star.

It doesn’t have variable wattage or a ton of bells and whistles, but the Caliburn GK2 packs all the essentials of vaping into a gorgeous little box that weighs only 45.2 grams, and absolutely nails them. If you want a fun, reliable, and compact device you can use for MTL or r-DTL vaping with your favourite salt nic e-liquid, the GK2 is worth a look.

To learn more about this product or anything else we sell, contact U Vape and chat with a team member. We’ll be happy to answer any questions you have so you can make informed decisions about your vaping equipment.

Frequently Asked Questions

How do I know what coil to use with the Caliburn GK2?

The G2 Replacement Pods compatible with the Caliburn GK2 are available in 0.8ohm or 1.2ohm options. Use the 0.8ohm coil if you want more flavour and larger cloud production, or the 1.2ohm coil for a tighter draw and a more refined experience.

How long does the GK2's battery last?

With a 690mAh battery, the GK2 lasts about seven hours on a full charge, which is competitive for compact pod systems of its size.

Does the UWell Caliburn GK2 have adjustable wattage?

No, the Caliburn GK2 does not feature adjustable wattage. However, it does have adjustable airflow controls.

How Long Does It Take to Charge the Caliburn GK2?

It takes about 30 minutes to charge the GK2’s 690mAh battery from empty to full when you use the USB-C charger supplied with the kit.

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