Uwell Caliburn GZ2 Review — "The Mini, The Mighty"

Pod systems have come a long way, and the Caliburn GZ2 enters the market as one of the most compact yet capable options from Uwell’s ever-popular Caliburn series. In this review, we’ll walk through hands-on testing of the GZ2 — what stands out, what could be improved, and whether it’s worth adding to your collection.

What’s in the Box & Key Specs

Kit Contents:

• 1 × GZ2 Device
• 2 × Caliburn G2 Pods (one pre-installed coil and one spare)
• 1 × 0.8 Ω Caliburn G Coil
• 1 × 1.2 Ω Caliburn G2 Coil
• 1 × USB-C Cable
• 1 × User Manual

Key Specifications:

• Dimensions: 68.9 mm × 23.8 mm × 23.6 mm
• Battery Capacity: 850 mAh (internal)
• Maximum Output: 17 W
• Resistance Range: 0.8 – 1.0 Ω
• Chassis Material: Aluminium Alloy
• Charging: USB-C Port
• Operation: Draw-Activated (no buttons)
• Pod Capacity: 2 mL (top-fill)
• Pod & Coil Compatibility: Caliburn G2 Pods & Caliburn G Coils
• Pod Connection: Magnetic
• LED Indicator Light & Vibration Alerts

Design & Build Quality

The Caliburn GZ2 vape pod system marks a shift in design from Uwell’s traditional slim pen-style devices to a compact box-style “ZEGA” form. The aluminium-alloy frame feels premium yet lightweight, and its small footprint makes it perfect for carrying in your pocket or bag.

There are no buttons or screens — just a simple draw-activated firing system. A translucent side window allows you to monitor your e-liquid level easily. The magnetic pod connection holds securely in place, although it can be slightly firm when removing the pod.

The LED lighting strip on the side adds some futuristic flair, giving you real-time feedback on battery status and lighting up during use. It’s a stylish touch, though some users who prefer a stealth vape may find it a bit bright.

Pod & Coil System

The Uwell Caliburn GZ2 uses the same Caliburn G2 pods as its predecessor and supports the entire Caliburn G coil series, making it compatible with coils you might already own. Each pod holds 2 mL of e-liquid and features a top-fill system accessible by snapping off the mouthpiece.

Pod Features:

• 2 mL capacity with top-fill port
• Adjustable airflow control wheel for MTL to restricted DTL draws
• Magnetic pod connection for quick swap-outs

Coils Included:

• UN2 Meshed 0.8 Ω (pre-installed)
• UN2 Meshed 1.2 Ω (spare)

Swapping coils is simple: pull out the old one, press-fit the new coil firmly into place, fill your pod, and wait a few minutes for the wick to saturate. Some users find the snap-off top cap a little stiff, especially with smaller bottle tips, but it remains a clean and leak-resistant system overall.

Performance and Vape Experience

Flavor & Vapor

The GZ2 delivers excellent flavor for its size. The 0.8 Ω coil produces a warmer, richer vape, while the 1.2 Ω coil offers a cooler and smoother draw that’s ideal for salt nic e-liquids. Both options perform consistently and deliver impressive longevity — often lasting a week or more of steady use.

Airflow & Draw

The adjustable airflow gives you fine control over how tight or loose your inhale feels. At its tightest, you’ll get a true mouth-to-lung experience reminiscent of a traditional cigarette, while opening it up creates a slightly airier restricted direct-lung vape. The auto-draw activation is responsive and fires instantly when you inhale.

Battery & Charging

The 850 mAh internal battery is more than respectable for such a compact device. Under moderate usage, it can easily last most of a day before needing a recharge. The USB-C port supports fast charging and fully tops up the device in around 40-45 minutes. The LED indicator shows battery levels as follows: green (60–100%), blue (30–60%), red (below 30%).

Limitations

With a maximum output of 17 watts, the Caliburn GZ2 is clearly targeted toward MTL or restricted DL vapers rather than those seeking massive clouds. There’s no manual wattage control, so the device automatically adjusts power based on the coil resistance. For most users that’s a positive — it’s effortless — but tinkerers might prefer more control.

Pros and Cons

Pros:

• Compact, lightweight, and durable build quality
• Excellent flavor reproduction for a pod device
• Good battery life with fast USB-C charging
• Easy operation — no buttons, auto-draw activation
• Adjustable airflow for custom draws
• Cross-compatible with Caliburn G and G2 coils

Cons:

• Top-fill cap can be a bit stiff
• Wattage not user-adjustable
• 2 mL pod capacity is small for heavy vapers
• LED light strip may be too bright for stealth use
• Pods fit tightly — removal can require a firm pull

Who Is It For?

The Caliburn GZ2 is perfect for:

• Beginners looking for a reliable and hassle-free starter kit
• Intermediate vapers who want a portable daily device or backup unit
• MTL vapers and those who prefer nicotine salt e-liquids
• Fans of the Caliburn G series wanting coil and pod compatibility

It may not suit you if you prefer high-wattage direct-lung vaping or desire a larger tank capacity and advanced controls.

Final Verdict

The Uwell Caliburn GZ2 Pod Kit stays true to the Caliburn legacy by offering exceptional flavor and reliability in a tiny, stylish package. It’s simple to use, robustly built, and delivers a consistently satisfying vape experience. While it’s not a device for cloud-chasers, it nails the essentials of what most vapers actually want: convenience, flavor, and portability.

If you’re after a compact pod system that punches above its weight in performance and style, the Caliburn GZ2 is one of the best options on the market today.