The Uwell Caliburn G2 is the latest addition to the popular Caliburn pod vape series, designed to cater to more advanced users with its impressive features and capabilities. As the successor to the original Caliburn G, the G2 continues to build on its predecessor’s strengths while introducing several notable enhancements. Whether you’re a seasoned vaper or a smoker looking to quit, the Caliburn G2 promises a top-tier vaping experience with its adjustable airflow, haptic feedback, and improved battery life.

Uwell Caliburn G2 Overview

The Caliburn G2 is the second iteration in the G line, which stands for Great/Grand, signifying its target towards advanced pod users. One of the standout features of the G line is its All-In-One (AIO) nature, thanks to replaceable coils. However, the G2 offers more than just that, including a 750 mAh battery, haptic feedback, and fully adjustable airflow.

Product Specifications:

  • Price: $29.99 (at Vape Juice Depot)
  • Colors: Carbon Black, Pyrrole Scarlet, Shading Gray, Gradient, Ultramarine Blue, Cobalt Green
  • Battery Capacity: 750 mAh
  • Charging: Type-C, 25 minutes for a full charge
  • Pod Capacity: 2 mL
  • Coils: UN2 Meshed-H 0.8Ω, 1.0Ω, 1.2Ω
  • Dimensions: Mid-sized between the original Caliburn G and the A2

Essential Features:

  • Replaceable Coils: Cost-effective in the long run
  • Adjustable Airflow: Fully adjustable for a customizable vape experience
  • Haptic Feedback: Vibrates for various notifications, enhancing user interaction
  • Juice Window: Visible from both sides for easy monitoring of e-liquid levels
  • Fast Charging: Fully charges in about 25 minutes

Construction & Appearance

The Caliburn G2 exhibits a hybrid design, merging elements from both the original G and the A2. It features textured sides similar to the G and smooth front and back akin to the A2. The device’s dimensions place it between the G and the A2, offering a balanced size. The mouthpiece combines the comfortable curve of the A2s with the size of the G’s.

A significant improvement in the G2 is the juice window, which is now visible from both sides, making it easier to check the juice levels. The pods are redesigned for airflow adjustability, which is a major upgrade, although they are incompatible with previous Caliburn models. Instead of using magnets, the pods click into place, and the device vibrates upon pod insertion, adding a tactile feedback element.

Functionality & Operation

The Caliburn G2 uses the same UN2 coils as the original G, with the addition of a new 1.2-ohm coil. Here’s a breakdown of the available coils:

  • 0.8Ω Coil: Best for flavor, suitable for a restricted direct lung (DL) vape if the airflow is fully open.
  • 1.0Ω Coil: Ideal for mid-strength juices.
  • 1.2Ω Coil: Perfect for stronger salts.

The adjustable airflow allows for fine-tuning your vaping experience. The higher resistance coils (1.0Ω and 1.2Ω) produce cooler and weaker vapor, suitable for high nicotine content, while the 0.8Ω coil excels in flavor production.

In terms of coil life, expect approximately 20-25 mL per coil, with the 0.8Ω coil lasting the longest. The G2 shows no significant issues with flooding or leaking, even after prolonged periods of inactivity.

Power Management & Recharging

Equipped with a 750 mAh battery, the G2 charges via a Type-C port, taking about 25 minutes for a full charge. This is a marked improvement over the original G, which took 45 minutes. However, the battery life, while good, doesn’t fully reflect the 50% increase in capacity compared to the original G. The G2 provides around 2.5 mL of juice per charge with the 1.0Ω and 1.2Ω coils and slightly over 3 mL with the 0.8Ω coil.

The device features an LED indicator that shows battery levels:

  • Green: 60-100%
  • Blue: 30-60%
  • Red: 0-30%

How To Operate Uwell Caliburn G2?

Operating the Caliburn G2 is straightforward, even for those new to vaping. Here’s a step-by-step guide:

  • Prime the Coil: Drip 4-5 drops of juice inside the coil.
  • Insert the Coil: Place the coil in the pod with the flat side at the bottom pointing toward the red airflow mechanism.
  • Fill the Pod: Remove the flat side of the mouthpiece and fill the pod via the red hole.
  • Let it Sit: Allow the device to sit for 5 minutes to saturate the coil.
  • Power On: Click the button five times to turn on the device.
  • Vape: Press the button or inhale through the mouthpiece to vape.
  • Adjust Airflow: Remove the pod to adjust airflow if the draw feels too tight or too loose.

The haptic feedback will notify you when:

  • A pod is inserted
  • The device short-circuits
  • The battery is low
  • A puff lasts for 8 seconds
  • The device is charging or fully charged

Pros & Cons


  • Excellent build quality
  • Lightweight and compact design
  • Sleek aesthetics (combination of G and A2)
  • Comfortable mouthpiece
  • Cost-effective replaceable coils
  • User-friendly operation
  • Fully adjustable airflow
  • Haptic feedback enhances the user experience
  • Dual-sided juice window
  • Three coil options for varied vaping experiences
  • Great flavor production with the 0.8Ω coil
  • Good for high nicotine with 1.0Ω and 1.2Ω coils
  • No leakage issues
  • Fast Type-C charging
  • Decent battery life


  • Battery life doesn’t fully meet the 750 mAh expectations
  • No warning vibration before battery depletion


In summary, Uwell has done a fantastic job with the Caliburn G2. While those who already own the A2 or KOKO 2 might not find the upgrades essential, the G2’s fully adjustable airflow, replaceable coils, sleek design, and haptic feedback make it a top choice for most vapers. Its user-friendly features, combined with its excellent performance, make the Caliburn G2 the best iteration in the Caliburn series to date.


Is the Uwell Caliburn G2 suitable for beginners?

While the Caliburn G2 offers advanced features like adjustable airflow and haptic feedback, it remains user-friendly and accessible even for beginners transitioning from smoking to vaping.

Are the coils interchangeable with other Caliburn models?

No, the Caliburn G2’s coils are specifically designed for this model and are not compatible with previous Caliburn versions. However, they offer improved performance and versatility.

Does the Caliburn G2 suffer from leaking issues?

Unlike some earlier Caliburn models, the G2 has been redesigned to minimize leaking. Users have reported no significant leaking problems, especially with proper maintenance and care.

About The Author

Aruna Kumari is a prolific writer, specializing in CBD and cannabis topics. With a wealth of experience, she crafts insightful content that educates and empowers readers about the benefits and nuances of cannabis and CBD usage.

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