At a glance: Choose this if you want adjustable power and Storm and Waves presets on the GPP cartridge platform.
The way onto the GPP platform
The G4 is the entry point to UWELL’s GPP platform, and the platform is the reason to care. Four devices on this shelf take the same cartridge in the same four resistances, so moving between them leaves your consumable shelf untouched.
On its own terms, it is a 1300mAh pod kit with a colour screen and thirty-five watts available, enough to run the whole GPP range from a tight 1.2 ohm mouth-to-lung to a 0.4 ohm restricted lung draw.
UWELL lists Storm and Waves firing presets for the G4. These are separate from the screen’s day and night display modes.
The cartridge flips, which is a real airflow control
UWELL give you three ways to change the draw on this device: slide the airflow valve, load the cartridge the other way round, or do both. The second one is unusual, and it is not a gimmick; turning the cartridge presents a different air path, and the difference is audible.
The larger UWELL Caliburn G4 Pro Pod Kit 1800mAh 35W swapped it for a stepless slider; only the UWELL Caliburn G5 Lite SE Pod Kit 1600mAh 35W keeps it, and that device has no wattage control at all. So this is the one place you get both the reversible cartridge and a number you set yourself.
GPP, and the four resistances that define it
The consumable is the UWELL Caliburn GPP Replacement Pods cartridge, with the coil sealed inside. UWELL make it at 0.4, 0.6, 0.9 and 1.2 ohms, and for each one they publish the wattage band it is built for. The 0.4 ohm wants the top of what this device can give; the 1.2 ohm wants well under a third of it.
Use the recommended operating band for the exact fitted GPP cartridge and follow the G4’s adjustment instructions. Keep the setting within the cartridge and device limits.
What GPP does not fit
UWELL states that GPP cartridges fit the Caliburn G3, G4 and G5 device families. They do not fit the older Caliburn G, G2 or GK2: those take a refillable pod with a separate replaceable coil, which is a different architecture and a different shopping list.
And the A-series is separate again. The UWELL Caliburn A3 Pod Kit 520mAh MTL takes its own pod and shares nothing with any of this.
Which bottle goes in it
Use a suitable 50/50 liquid and choose nicotine concentration according to the exact liquid, cartridge, device and operating-power guidance. Suitable 0.6Ω-and-above stocked pod/MTL configurations are not excluded merely because they are below 1Ω, but this does not approve every concentration at every power. Perceived smoothness or harshness alone does not establish delivered dose. The Nicotine Salts shelf includes suitable 50/50 options. Select the fitted GPP resistance and follow its supported power band rather than treating 10mg or 20mg as a fixed requirement.
Select liquid using the fitted GPP cartridge, device and supported power guidance. Resistance alone does not prescribe a nicotine concentration or predict a particular symptom. Suitable 50/50 liquids can be used on stocked 0.6Ω-and-above pod/MTL configurations without imposing a strict 1Ω threshold; this does not approve every concentration or power. Do not transfer that guidance automatically to a different cartridge.
Dimensions and pod fit
The G4 measures 114.98 × 26 × 15.65mm. It uses compatible GPP cartridges; select the exact capacity and fill format when ordering replacements.
Capacity is worth a specific warning. GPP cartridges exist at three millilitres and 2.5 millilitres, with a two-millilitre version also available.
Which of the four GPP devices to buy
Compare the G4’s adjustable power and airflow with the G4 Pro’s touchscreen, the G5 Koko’s compact format and the G5 Lite SE’s automatic power. G5 Lite SE retains adjustable airflow; it has no manual wattage setting. Related: UWELL Caliburn G5 Koko Pod Kit 1600mAh 35W.
None of the four is more powerful than any other. Thirty-five watts is the ceiling on all of them.
The first cartridge, and what to do with it
The kit ships with GPP cartridges fitted and spare. Fill the cartridge and close the filling port. UWELL’s G4 manual specifies a ten-minute stand after the first fill before use. Follow the startup instructions and do not activate the device while the wick is dry. The coil is integrated into the cartridge, so a persistent burnt taste requires replacing the cartridge.
Set output within the fitted GPP cartridge’s marked power range and follow UWELL’s startup procedure before use.
Delivery and dispatch
Nairobi orders and the towns around it go same day from Vapesoko Nairobi. The rest of Kenya arrives by courier, usually within 1 to 2 business days.
Best for
- The plainest route onto GPP
- A cartridge you can load either way round
- Published wattage bands per resistance
- A colour screen and a puff counter
- One cartridge, four resistances
What’s included
UWELL lists no charging cable in this pack. Other documented versions use 0.6Ω plus 0.9Ω 3ml pods, or 0.4Ω plus 0.9Ω 2ml top-fill pods; check the selected version.
- Device: 1 × UWELL Caliburn G4.
- Pods: 1 × 0.4Ω and 1 × 0.9Ω Caliburn GPP integrated-coil cartridge, 3ml side-fill each in the standard pack.
- Documentation: 1 × user manual.
Required separately
- E-liquid: A compatible liquid for the exact fitted pod or coil and supported operating settings.
- Charging cable: A suitable USB-C cable; none is listed in the manufacturer pack above.
Check before ordering
- Edition: Confirm the exact device edition and supplied cartridge or coil before ordering.
- Replacements: Use the exact supported pod or coil platform; similar brand names do not establish interchangeability.
Specifications
- Category: Pod Kits
- Device class: Pod kit, sealed internal battery
- Battery: 1300mAh (UWELL)
- Power: Up to 35W, adjustable. Triple-click to enter the settings and adjust on-screen
- Cartridge it takes: Caliburn GPP cartridge, coil built in
- Replacement cartridge: UWELL Caliburn GPP Replacement Pods
- Resistances available: 0.4, 0.6, 0.9 and 1.2 ohm
- Airflow: A slider, plus the cartridge can be loaded either way round to change the draw
- Charging: USB Type-C, 5V 2A (UWELL)
- Screen: A 0.85-inch colour screen with a puff counter and a day and night mode
- Preset modes: Storm and Waves
- Liquid format and strengths stocked: Suitable 50/50 liquid; concentration follows the exact liquid, cartridge, device and power guidance
- Refillable: Yes, you supply the e-liquid
- Who it is for: Adult smokers and vapers, 18+. Not suitable for non-smokers or for anyone who has never used nicotine.
- E-liquid not included: Sold as hardware only
- Charging port: USB Type-C
- Delivery: Same day in Nairobi and nearby towns on an early dispatch; typically 1 to 2 business days elsewhere in Kenya
Compare the G4 and G4 Pro
Choosing between the two? Compare Caliburn G4 and G4 Pro controls, screens and battery capacity before selecting your kit. Both use supported GPP cartridges; the controls and included pack contents are described on each product page.
