Uwell Caliburn G4 Pod Kit

Adjustable wattage, two power modes, a colour screen, and four airflow configurations from a pod kit that fits in your palm. The Uwell Caliburn G4 runs a 1300mAh battery at 5 to 35W, uses the cross-compatible GPP pod platform, and gives you Uwell's PRO-FOCS 4.0 flavour technology with a claimed 35% improvement in both coil life and flavour delivery. 

Storm Mode for a harder, faster hit. Waves Mode for a smoother, steadier draw. 0.85-inch HD colour screen with animated themes, day and night brightness modes, and a puff counter. Refillable 2ml pods (UK TPD), USB-C fast charging at 5V/2A, and eight colours. Over 18s only. Browse the full Uwell Range at Pirate Vapes.

Why vapers choose the Caliburn G4:

• Two power modes change how the hit feels. Storm Mode pushes harder from the start of each draw for a stronger throat hit and more vapour. Waves Mode builds gradually for a gentler, smoother pull. Same device, genuinely different experiences.

• 5 to 35W adjustable output lets you dial in the exact wattage for your pod resistance and liquid strength, rather than relying on a fixed output that might be too warm or too weak

• GPP pod compatibility means the G4 accepts pods from the Caliburn G3 series, the G4 range, and the newer G5 line. One pod platform across three device generations.

• 0.85-inch HD colour screen with animated themes, puff tracking, and day/night brightness is genuinely useful, not just visual flair

• Four airflow configurations from the combination of the slide valve and reversible pod orientation give you control over draw tightness that most pod kits simply do not offer

Uwell Caliburn G4 Features

Storm Mode and Waves Mode Are Not Just Names

Storm Mode fires at full selected wattage from the instant you draw or press the button. The vapour is immediate, warm, and dense. Waves Mode ramps up gradually over the draw, starting softer and building. 

The practical difference: Storm with the 0.4ohm pod at higher wattage gives you a genuine RDL experience with a strong throat hit. Waves with the 0.9ohm or 1.2ohm pod at lower wattage delivers a calm, controlled MTL pull that suits nic salts at 10mg or 20mg. Switching between modes takes two seconds through the screen menu.

Airflow Control That Goes Beyond a Slider

Most pod kits with adjustable airflow give you one dial. The Caliburn G4 gives you three. Slide the airflow valve on the body to control air intake. Insert the pod in the standard orientation or rotate it 180 degrees for a different airflow channel geometry. Combine both for a fourth option. 

The result is a range of draw tightness that runs from a very tight, cigarette-style MTL pull through to a noticeably looser restricted DTL draw. Not many Pod Kits can cover that range without changing the pod.

PRO-FOCS 4.0 Delivers on the Flavour Promise

Uwell claims a 35% improvement in both flavour satisfaction and coil lifespan with the G4's upgraded GPP cartridges and PRO-FOCS 4.0 system. The coil testing process is designed to ensure each mesh element delivers the e-liquid's intended flavour profile without introducing metallic or cotton undertones. 

In practice, the break-in period on a fresh G4 pod is noticeably shorter than older Caliburn generations. Flavour comes through clean from the first fill, and it stays consistent further into the pod's lifespan before degradation kicks in.

That Screen Is Actually Useful

The 0.85-inch HD colour display shows battery level to 5% accuracy, current wattage, pod resistance, puff count, and last-draw duration. Day mode runs bright for outdoor visibility. Night mode dims for low-light use. 

There are animated themes with retro-style visuals that play while you vape, and you can switch to a simple text-only display if you prefer clean information over animation. The screen is controlled through a four-click menu system. Not a touchscreen. Buttons. Reliable.

Titanium Alloy Body Built to Last

The G4 uses a titanium alloy shell rather than the plastic or basic aluminium that most pod kits run. It feels noticeably more solid in hand and handles drops better. The patterned surface texture adds grip without a case. 

At 1300mAh with 5V/2A fast charging, the battery lasts a full day for most vapers and tops up faster than the Micro-USB devices still common in this price range.

Uwell Caliburn G4 Colours

Eight finishes. Each uses the same titanium alloy body with a pearlescent or metallic plate surrounding the screen.

#buttons

• Karst Grey
• Seashell White
• Glacier Blue
• Flamingo Red
• Twilight Silver
• Gunmetal Grey
• Sahara Gold
• Polar Black

How to Set Up the Uwell Caliburn G4

1. Charge the device fully. Connect the USB-C cable. The screen displays charging progress. At 5V/2A, a full charge from empty takes under an hour.

2. Fill the included GPP pod. Open the fill port (side-fill on the G4 pods). Pour your chosen e-liquid to just below the max line. Avoid overfilling.

3. Let the coil soak for three to five minutes. The mesh wicking material needs time to saturate. Firing before the cotton is fully soaked burns the coil permanently. No shortcuts.

4. Click the pod into the device. The magnetic connection snaps it into place. Check the clear-view juice window to confirm the liquid level.

5. Turn the device on with five rapid button presses. The screen lights up and displays your current settings.

6. Adjust wattage and mode. Press the button four times to enter the menu. Set your preferred wattage and choose Storm or Waves mode. Start low, increase gradually.

7. Inhale or press the fire button. Both activation methods work. Adjust the airflow slider and pod orientation until the draw feels right.

What's in the Uwell Caliburn G4 Box

• One Caliburn G4 device with a 1300mAh rechargeable battery and 0.85-inch HD colour screen. 

• Two GPP replacement pods with built-in mesh coils (resistances included in the box vary). 

• One USB-C charging cable. 

• One user manual. 

No e-liquid included. Fill with your own freebase or nic salt liquid.

Compatible With Every GPP Pod in the Caliburn Ecosystem

The Caliburn G4 runs on the GPP (G Pod Platform) system. That means it accepts GPP pods from the Caliburn G3, G4, and G5 ranges: 0.4ohm, 0.6ohm, 0.9ohm, and 1.2ohm mesh options, in both top-fill and side-fill configurations. If you have leftover G3 pods from a previous Caliburn, they work in the G4. If you upgrade to a G5 later, your G4 pods carry over.

What the G4 does not accept: Caliburn G2 pods, Caliburn G pods, Caliburn A2 pods, or A-series pods. Those use entirely different pod formats. If your current Caliburn is a G3 or newer, the G4 is a straight swap.

About Uwell

The Caliburn series has defined Uwell's reputation in the UK market. From the original Caliburn through to the G3, G4, and now G5, the line has consistently been one of the most recommended refillable pod kits among UK vapers. The G4 introduced adjustable wattage, power modes, and a colour screen to the Caliburn formula for the first time. 

The GPP pod platform, launched with the G3 generation, means Caliburn owners are not starting from scratch with every device upgrade. Pods carry across generations, and new pod options become available without requiring a new device.

Stock Up and Save

The Caliburn G4 ships with two pods. A fresh pod lasts roughly seven to ten days with daily use, which means the included pair covers your first two to three weeks. After that, Caliburn GPP replacement pods are sold in packs of four: enough to cover the next month. Picking up a pack of pods alongside the kit means you are set from day one without a second order. 

Every order from Pirate Vapes ships the same day before 4 pm. TPD-compliant stock, age-verified checkout, over 18s only. Spend over £25 and delivery is free with Free Pirate Post.

Conclusion

The Uwell Caliburn G4 is the Caliburn for vapers who want control. Adjustable wattage from 5 to 35W, two power modes, four airflow configurations, and a 0.85-inch HD colour screen with themes and puff tracking. 1300mAh with USB-C fast charging. PRO-FOCS 4.0 flavour technology.

GPP pod compatibility across three Caliburn generations. Eight colours in a titanium alloy body. If you want a Refillable Pod Kit that does more than the minimum, the G4 delivers. Browse more Vape Accessories or head back to Pirate Vapes to keep exploring.

FAQs

What pods fit the Caliburn G4?

All Caliburn GPP pods: 0.4ohm, 0.6ohm, 0.9ohm, and 1.2ohm. These are the same pods used across the Caliburn G3 Pro, G4 Pro, and G5. Older G3 side-fill pods also fit.

What is the difference between Storm Mode and Waves Mode?

Storm Mode fires at full wattage instantly for a harder, faster hit. Waves Mode ramps up gradually for a smoother, more controlled draw. Both modes work across all pod resistances.

How long does the 1300mAh battery last?

A full day for most vapers. MTL use at lower wattage stretches it further. RDL use at 30W or above drains it faster. USB-C fast charging at 5V/2A tops up in under an hour.

Is the Caliburn G4 better than the G3?

The G4 adds adjustable wattage, a colour screen, two power modes, and four airflow configurations. The G3 is simpler and cheaper. If you want more control, the G4. If you want straightforward fill-and-vape, the G3.

What e-liquid works best with the Caliburn G4?

50/50 nic salt at 10mg or 20mg in the 0.9ohm or 1.2ohm pods for MTL. 50/50 or 70/30 freebase at 3mg to 6mg in the 0.4ohm or 0.6ohm pods for RDL. The G4 handles both styles well.

Has the Caliburn G4 been replaced by the G5?

The G5 is the newer model in the Caliburn lineup. The G4 remains in stock and continues to be sold alongside the G5. Both share the GPP pod platform.