Summary
UWell’s Caliburn G4 is designed to be compatible with Caliburn G3 pods—while offering a larger battery, upgraded display screen, and customized mode options. These features help it stand out from the rest of the Caliburn G series, while having the familiar look and feel that fans of the brand have come to expect.
Introducing the UWell Caliburn G4
The new UWell Caliburn G4 is a big upgrade from its predecessor, the Caliburn G3, but with a similar look and feel that vape users have come to expect. From more battery and wattage power to the addition of 2 power modes, there’s so much to love with the G4.
But does it hold up against similar vape products? Our U Vape team breaks down everything you need to know about the vape device and whether it’s worth the switch.
Pros
- New colour OLED display screen
- Compatible with G3 (or GPP) pods
- Larger battery (compared to predecessors)
- Larger wattage range
- 2 adjustable mode options
- U² technology to decrease coil burnout
- Sleek design with 8 colour choices
- Lightweight
Cons
- Lower liquid capacity (compared to predecessors)
- Not super intuitive (single-button adjustments)
- HD screen is still on the small side
Ratings
- Body & Design: 4/5
- Value: 4/5
- Ease of Use: 4.5/5
- Battery & Charging: 4.5/5
- Overall Rating: 4.25 stars
UWell Caliburn G4 Device Key Features
| Feature | Details |
|---|---|
| Battery Capacity | 1300 mAh (USB-C Rechargeable) |
| Max Output | 35W |
| Pod Compatibility | Caliburn G3 Pods |
| e-Liquid Capacity | 2 ml |
| Airflow Options | 3 airflow adjustments |
| Display | 0.85” OLED (colour or B/W) |
| Modes | Waves (smooth), Storm (strong) |
Similar Devices:
What’s in the UWell Caliburn G4 Device Kit?
- 1 x Caliburn G4 Pod System
- 1 x 0.4ohm Caliburn G3 Pod
- 1 x 0.9ohm Caliburn G3 Pod
- 1 x Type-C Charging Cable
- 1 x User Manual
One of the great things about the Caliburn G4 is that it’s compatible with the Caliburn G3 pod system, meaning you have a wider range of pod options available. As listed above, you have two resistances that are included within your device kit.
Read More: Unboxing the UWell Caliburn G3
First Impressions of the UWell Caliburn G4 Device
This easy-to-hold vape device has been given a sleek body upgrade from its predecessor. The Caliburn G4 is crafted from durable aluminum alloy with rounded corners and a unique ridged design. It’s also very lightweight at just 48g.
One of the newer updates is with the 0.85” HD screen—now in colour! The screen offers a dynamic theme UI with battery and wattage indicators, puff count and more. If you’re not keen on the new colourful animations, you can switch to a classic black and white interface.
Charging the UWell Caliburn G4 for the First Time
The Caliburn G4 comes with a standard USB-C charger that can be used on the go. When it’s time to recharge, It takes about 45 minutes and you’re good to start your next vape session.
Preparing the Pod in the UWell Caliburn G4
You can easily fill your Caliburn G4 with e-liquid without needing to remove the pod from the device. Simply refill from the top or the side of the pod. The Caliburn G4 does have a slight decrease in e-liquid capacity (2 ml compared to the G3’s 2.5 ml), so that’s something to consider if you’re thinking about making the switch.
Since the G4 is compatible with the G3 pods, you’ll enjoy the benefits of the improved ergonomic design and more comfortable mouthpiece. The upgraded design also boasts leak-resistant performance for a great vaping experience each time. When it’s time to replace your G3 pod, you can order more here.
Key Points:
- Refill your device through the top or side of pod
- Ergonomic design, comfortable mouthpiece and leak-resistant
Using the UWell Caliburn G4
Draw Quality
The G4 delivers consistent flavour and vapour thanks to UWell’s Pro-FOCS 4.0 flavour tech and new U² coil technology, which prevents burnouts and distributes heat more evenly.
You can switch between Waves mode (smooth draw) and Storm mode (stronger, punchier hit) depending on your preference.
Airflow Adjustment
Three airflow adjustment methods:
- Slide the side valve
- Flip the pod orientation
- Combine both methods for finer tuning
Charging & Longevity
You’ll get a noticeable upgrade in longevity with the 1300 mAh battery (35% more than the G3). USB-C charging takes about 45 minutes for a full charge, which should last most users a full day or more. The G4 also features U² technology, which allows your coils to heat evenly to prevent burnouts and also helps extend the lifespan of the pods.
Key Points:
- Upgraded 1300 mAh battery
- Wattage range 5W to 35W
- Coils heat evenly through U² technology
Pro Tips for Using the G4
- Use 20–25W for 0.4 Ω pods for a stronger, direct-lung hit
- Use 13–18W for 0.9 Ω pods for smoother MTL or nic salt vaping
- Lock the device (2 clicks) before pocketing to avoid misfires
- Tilt the pod slightly when top-filling to prevent overflow
- Charge before dropping below 10% to extend battery lifespan
- Switch to Storm mode for a bolder hit—great with lower resistance pods
- Use combined airflow adjustment (slider + pod orientation) for max control
Frequently Asked Questions About the Caliburn G4
What Does the HD Screen Show on the Caliburn G4?
The HD colour display screen shows: battery life, resistance, auto-record puffs, 1 of 2 vape modes, wattage power, and day/night mode.
Does the Caliburn G4 Have its Own Pod System?
No, the Caliburn G4 is compatible with G3 pods, meaning you don’t have to adapt to a new ecosystem. Two G3 pods are provided with your Caliburn G4 device kit.
How Often Does the Pod Need to be Replaced?
Each pod should last about a week for moderate vape users. If you start tasting a burnt flavour, it’s time to replace the device.
What are the Colours Options for the Caliburn G4?
The Caliburn G4 comes in 8 colours, including: Seashell White, Glacier Blue, Karst Grey, Flamingo Red, Twilight Silver, Gunmetal Grey, Sahara Gold, and Polar Black.
Read More: UWell Caliburn G4 FAQ
Should You Buy the UWell Caliburn G4?
Buy it if:
- You already use G3 pods and want a more advanced device
- You want a colour screen and power modes without using a mod
- You prefer reliable performance and smooth vapour
Skip it if:
- You prefer simpler, button-free devices
- You want more e-liquid capacity or less frequent refills
- You’re not ready to fiddle with airflow or wattage settings
Final Thoughts on the UWell Caliburn G4
Overall, we were very pleased with the new upgrades that the Caliburn G4 has to offer. With a larger battery capacity, enhanced design and a new colour display screen, it’s definitely worth exploring if you’re a fan of the Caliburn G family. It has many similarities to other devices within the series, so it will feel a little like home.
For more information on the Caliburn G4 or any of the other products we offer, contact U Vape so we can answer your questions in detail.
