Caliburn G4 Classic Pod Kit

The Uwell Caliburn G4 Classic is a refillable pod vape kit with a 1400mAh battery, 14 RGB LED display, and adjustable output from 5W to 35W. It uses a dual-sensor auto-draw setup alongside button fire, and the stepless airflow slider covers everything from tight MTL to open RDL. This Uwell G4 Classic kit sits in the Caliburn vape series and runs PRO-FOCS 4.0 flavour technology.

Two Caliburn G3 pods come in the box, a 0.9 ohm and a 0.4 ohm, both with mesh coils fitted. The G4 Classic also works with GPP pods from 0.4 ohm through to 1.2 ohm, giving you a wider resistance range than most pod kits. It handles nic salts, 50/50 freebase, and higher VG liquids. Four colours are available: Classic Silver, Classic Black, Alpine Green, and Abyss Blue.

Key Features

• 1400mAh battery lasts a full day on MTL, Type-C charging at 5V/2A
• 14 RGB LED display colour-coded battery level (green, blue, red)
• 5 to 35W adjustable output MTL and RDL coverage
• Dual-sensor auto-draw 99.999% trigger accuracy, 300% longer lifespan
• Stepless airflow control continuous adjustment from tight to open
• G3 and GPP pod compatible 0.4 ohm to 1.2 ohm resistance range
• PRO-FOCS 4.0 and U² anti-leak built into the pod platform
• Aluminium body 29 x 16.6 x 115.9mm

Caliburn G4 Classic Dual-Sensor Auto-Draw and Controls

The G4 Classic uses two sensors running at the same time for auto-draw activation. Uwell calls it 99.999% trigger accuracy, and the backup sensor means the auto-draw lasts around 300% longer than single-sensor kits before it starts to wear. You can also fire it with the button if you prefer.

The button itself needs 255gf of force to press, so it won't go off by accident in a pocket. Two clicks locks the button if you want to use auto-draw only. There aren't separate vaping modes on the G4 Classic - you just set your wattage and airflow, and PRO-FOCS 4.0 handles the rest automatically.

G4 Classic Pod Compatibility

One of the main things about the Caliburn G4 Classic is that it takes two different pod platforms. Your kit ships with Caliburn G3 pods, but GPP pods fit too.

G3 pods are top-fill with mesh coils pre-installed. GPP pods come in top-fill and side-fill versions across that full resistance range. Both types hold 2ml (TPD) and work with PRO-FOCS 4.0 flavour technology.

For nic salt e-liquids, go with the higher resistance pods (0.8 ohm and above) at lower wattages.

Caliburn G4 Classic Airflow Control

The Caliburn G4 airflow control is recessed into the body and moves continuously with no fixed click stops. Slide it closed for a tight MTL draw, open it up for RDL. The pod cartridge itself is reversible too, giving you a secondary airflow adjustment on top of the main slider. If you've used other Caliburn Classic or Caliburn G3 kits before, the G4 Classic airflow is a step up with that stepless sliding action.

Caliburn G4 Classic Colours

• Classic Silver
• Classic Black
• Alpine Green
• Abyss Blue

All four use the same aluminium construction with an anodised finish. The cylindrical shape has the fire button centred on the front with the airflow control recessed below it.

Caliburn G4 Classic Specifications

Why Choose the Caliburn G4 Classic

The dual pod platform is the big draw here. Most pod kits lock you into one set of pods, but the G4 Classic takes both G3 and GPP pods across a 0.4 to 1.2 ohm range. That's useful if you want to experiment with different resistances or vaping styles without buying a new kit.

The 1400mAh battery and dual-sensor auto-draw are solid upgrades over older Caliburn models too. Our best vape juice flavours for Caliburn G4 guide has pairing suggestions if you're looking for the right liquid to go with it.

What's in the Box?

• 1 x Caliburn G4 Classic Kit
• 1 x Caliburn G3 Pod 0.4 ohm (pre-installed)
• 1 x Caliburn G3 Pod 0.9 ohm
• 1 x User Manual
• Note: Type-C USB charging cable not included