The Uwell Caliburn G Cartridge features a top-filling system and 2 airflow options(DTL/MTL) by rotating the cartridge by 180°. And it comes with a silicone check valve to avoid e-liquid leakage and reduces the mess.
Main Features:
1. Top-filling cartridge, 2 airflow options(DTL/MTL) by rotating the cartridge by 180°