Don’t be fooled. Simple in form. Attractively priced. Yet, packed with all the flavor technology customers love. Including special functional features all wrapped up in the Common Citizen 510 thread battery. -Grade A Lithium-ion battery -Variable voltage switch: 2.6V for flavor and terpene retention 3.5V for big clouds -SmartPulse™ power waves maintains a consistent temperature -Long lasting 180 mAh battery Charging -Micro-USB port for easy recharging Charging lights: Red LED light blinks during charging Green LED lights up when fully charged -Bottom Port Hole to blow through the bottom of the battery to unclog the 510 thread cartridge. -Draw Activated (buttonless) SmartPulse™ regulates heating with automated power wave temperature control. Preserving the terpenes and never harming the cartridge or product. And for finer adjustments, you can switch between a low/high voltage setting to enjoy your terpene-rich flavors or big clouds.