The CLEAR 510 Battery features dual variable voltage, giving you full control over your hits by allowing you to customize the intensity of each puff to perfection. With just two heat modes, we don’t overcomplicate it. 3.0v low heat to savor the flavor or 3.6v high heat for larger hits. Push the button as you inhale. Compatible with all The CLEAR cartridges and any other traditional 510 threaded cartridge.