Super powerful, compact size and comfortable to hold, you want it all? People always thought that strong power should match with large size, SMOK will say NO to that. The 350W output is the maximum output power in the global market while still providing compact size. It is the GX350. Powered by 4 18650 batteries, supports a micro usb port while being upgradeable. When matching with the cloud beast or cloud king, you will enjoy fantastic clouds.