The Caliburn X is likely the most advanced pod system from Uwell. This device is digitally adjustable and capable of up to 20w for a decent sized cloud. The Caliburn X also has and externally adjustable airflow so you can tighten or loosen the draw on the fly. While it does use a proprietary pod, the Caliburn X is compatible with all the Caliburn G and G2 coils. The kit includes 2 different coils to start as well as a USB type-C charging cable.