Simple design meets precise heating control with the HoneyStick Digital 510 Cartridge Battery! This pen style vaporizer is equipped with variable voltage adjustment 0.1V at a time, allowing you to dial into the exact results you want in every sesh. Its single button operation makes this model easy to use and adjust, all while staying discreet in public. On the front is a digital display screen so you can monitor voltage levels and battery life in real time. This screen also displays a 12-second countdown during the vaporizer's preheat mode, letting you know when it's ready to rip! Each vape pen has universal 510 threading compatible with most cartridges on the market. Charge up quickly between sessions via the included USB-C charging cable.