This is a button activated battery, 510 threaded vaporizer Battery, protective case included! Holds your Battery, cartridge, and charger! *NEW* There are 3 settings for Green (Low, 2.6v), Blue (Medium, 3.3v) and Red (High, 4.0v). The lower the temp the smoother the hit, and the longer it will last. A higher setting will give you more potent/stronger hits but the cartridge will not last as long.