UWell Caliburn G4 Pro Review

Key Features

Here’s a quick rundown of the Caliburn G4 Pro’s features:

First Impressions

Right out of the box, the G4 Pro makes it clear this isn’t just another pod system. The aluminium alloy body feels solid in your hand without being heavy, and the contoured mouthpiece has a smooth, inviting appearance that makes you want to start using it. But the real showstopper here is the touchscreen.

We’ll admit that we didn’t expect to see such a sharp, full-featured display on a device this small. It immediately gives the G4 Pro a high-tech feel that sets it apart from most other compact pod systems. We were curious whether the screen might drain the battery faster, but we’ll get into that later (spoiler alert: it doesn’t).

Inside the box, UWell keeps things simple: you get the device itself, two GPP pods (0.4Ω and 0.6Ω), and a user manual. It’s everything you need to get started.

In the Box:

• 1 × Caliburn G4 Pro Pod Device
• 1 × 0.4Ω GPP Pod
• 1 × 0.6Ω GPP Pod
• 1 × User Manual

Charging & Setup

During our tests, the G4 Pro’s built-in 1800mAh battery recharged from empty in just over an hour using the USB-C port. That’s not groundbreaking, but it is quick and convenient—just what you’d expect for a device like this.

Refilling the pods was just as simple. We removed the mouthpiece, filled up to the 2ml line with e-liquid, and snapped it back into place. After letting the coil saturate for a few minutes, the device was ready to go.

Using the Device

Mouthpiece & Feel

Over the course of our review, the G4 Pro proved to be a reliable daily carry. The compact, lightweight design made it easy to slip into a pocket, and the ergonomic mouthpiece consistently provided a smooth, natural draw.

Touchscreen UI

The 2.51-inch shatterproof touchscreen was the most exciting feature for us. It felt like using a downsized version of a more advanced mod. You can use it to:

• Adjust wattage (up to 35W)
• Monitor battery life and pod levels
• Track puff count
• View coil resistance
• Switch between 6 display themes

Despite our initial concern that the screen might impact battery life, we didn’t notice a significant difference. Even after plenty of tapping around, the device held its charge throughout a full day of use.

Taste & Pod Performance

When it comes to actually using the device, the taste here is pretty similar to what you would get from the Caliburn G4, but that’s not a bad thing as far as we’re concerned. These are great-tasting and reliable vapes already; you don’t fix what isn’t broken. The real upgrade with the Pro seems to be on the UI end.

Both pods included in the kit gave us solid results. The 0.6Ω pod excelled at delivering smooth flavour for MTL and lower-wattage RDL vaping, while the 0.4Ω pod produced noticeably denser vapour and more intense flavour at higher wattages.

Key Takeaways

• Smooth and ergonomic mouthpiece design
• Touchscreen offers full control and customization
• Pods deliver strong flavour with minimal leakage

Pro Tips for Using Your Caliburn G4 Pro

• E-Liquids: Use nicotine salts (≤20mg/mL) for MTL and freebase liquids (3–12mg) for RDL/DTL.
• VG/PG Ratios: 50/50 or 60/40 for MTL; 70/30 for RDL/DTL. Avoid max VG blends.
• Battery Care: Don’t leave charging unattended overnight. Unplug when full.
• Pod Maintenance: Replace pods when flavour weakens or vapour decreases.

Competitor Comparisons

Should You Buy It?

For us, the G4 Pro feels less like a radical redesign of the Caliburn series and more like a thoughtful design upgrade. At its core, it’s still the same compact and reliable pod system that made the Caliburn name popular, but with some new tech that gives it a more modern edge.

The UI is the big change here, and we found it to be genuinely useful rather than just a flashy extra. Using the touchscreen to adjust wattage, track usage, and personalize the display with different themes made the device feel considerably more premium than the G4, not to mention more fun! But it still maintains the simplicity and ease of use that made earlier Caliburn models such strong everyday options.

Overall, the Pro delivers plenty of value in a sleek, good-looking package that balances premium features with everyday practicality.

Buy It If

• You like the Caliburn G4 but want a more modern UI experience
• You value customization and control in a compact pod system
• You want all-day reliability without moving up to a bulkier mod
• You appreciate stylish design with a bit of extra polish

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