Solid 510-thread rechargeable batterySleek, compact design fits comfortably in your hand and pocket.Durable stainless-steel casingStylish, strong, and lightweight.Button-activated w/preheat function for enhanced clog resistance & increased efficiency- 3 settings from 3.3V - 4.3VUSB Type-C Port for charging convenience.Long-lasting Lithium-ion BatteryRechargeable 350 mAh capacity battery.Fits standard 510 cartridges