UWELL Caliburn GK3 Pod System | 25W, 900 mAh, Leak-Resistant
The GK3 is Uwell's compact 25W pod kit built around one specific problem: pods that leak. The G3 cartridge uses ultrasonic welding and a U-shaped channel at the base — Uwell's U² system, which the company rates at 150% better air-tightness than the design it replaced. Add a retro digital screen and dual airflow from rotating the pod, and it is a lot of device for its size.
Highlights
- 900 mAh built-in battery with USB Type-C rapid charging
- Adjustable output to 25W
- U² anti-leak cartridge: ultrasonic welding plus a U-shaped channel
- Large retro digital screen — wattage, puff count, battery
- Dual airflow: rotate the pod 180 degrees to change the draw
- Pro-FOCS flavor tech, magnetic quick-connect pod
- Seven finishes, lanyard included
Specs
| Battery | 900 mAh built-in |
| Output | Adjustable to 25W |
| Pod | Caliburn G3, 2.5 mL as Uwell lists it, magnetic |
| Airflow | Two settings, selected by pod orientation |
| Activation | Draw-activated |
| Display | Digital screen: wattage, puff count, battery |
| Charging | USB Type-C rapid recharge |
| Construction | PCTG and PC+ABS |
What U² actually does
Most pod leaks start at the seams around the base of the cartridge, where pressure changes push juice past a rubber gasket. Uwell welds those seams ultrasonically instead of relying on the seal alone, and routes the airpath through a U-shaped channel so condensation collects where it cannot run out into your pocket. The 150% air-tightness improvement is Uwell's own figure, measured against their previous cartridge — treat it as a direction rather than a guarantee, but the design change behind it is real and it is the reason this kit exists.
Which pods it takes
Uwell Caliburn G3 pods in 0.4Ω, 0.6Ω, 0.9Ω and 1.2Ω, shared with the whole G3 family including the Caliburn G3 25W kit. One pod type covers every device in the range.
Run the 0.9Ω or 1.2Ω with nicotine salts for a cool, tight, battery-friendly draw. The 0.6Ω and 0.4Ω suit regular-strength juice and a warmer, more open pull — the 0.4Ω hits hardest and drains the 900 mAh fastest.
What is in the box
- Caliburn GK3 device
- 1x 0.6Ω Caliburn G3 pod
- 1x 0.9Ω Caliburn G3 pod
- USB Type-C cable
- Lanyard and user manual
GK3, or the G3?
Same pods, same 25W class, same flavor. The GK3 leans sportier with its grip-textured chassis and puts a bigger screen on the front; the Caliburn G3 keeps the classic slim bar shape. If you already own one, the other makes a natural backup, because a spare pod fits both.
Why buy the GK3 from Central Vapors
We carry G3 pods in all four resistances and keep them stocked, so the kit stays usable long after the pods in the box are spent. Central Vapors has been filling vape orders since 2013, and every order is backed by our satisfaction guarantee.
Caliburn GK3 — common questions
| Q |
Which pods fit the Caliburn GK3? Uwell Caliburn G3 pods in 0.4Ω, 0.6Ω, 0.9Ω or 1.2Ω, shared across the whole G3 family. |
| Q |
How does the dual airflow work? Seat the pod one way for a tighter mouth-to-lung draw, rotate it 180 degrees for a looser one. There are no moving parts to wear out. |
| Q |
Does it actually stop leaking? The G3 cartridge is built specifically against it — welded seams and a U-shaped channel rather than a gasket alone. No pod is leak-proof if you overfill it or leave it in a hot car, but this is one of the better-sealed designs in the class. |
| Q |
GK3 or G3 — which kit should I pick? Same pods and the same performance class. The GK3 is the sportier, screen-forward one; the G3 is the classic bar shape. Either makes a good backup for the other. |
| Q |
How do I know when to replace the pod? When flavor drops or the pod darkens and a refill does not bring it back — typically every one to two weeks. Keeping it above a quarter full protects the coil from dry hits. |
For use by adults 21+.
