The Yocan b-smart battery is a 510-threaded, small and compact vaporizer battery that allows you to enjoy an array of cartridges and atomizers that'll fit your needs. Customize your temperature settings by using the battery's variable voltage between 2.0 and 4.0 volts to get the exact flavour and vapor you desire. Change the voltage settings by 0.1-volt increments, allowing for the ultimate temperature precision. The sleek and stylish design of the Yocan b-smart battery fits easily into your lifestyle, fitting nicely into the pocket of your suit, or into your purse for a casual night out. BATTERY ONLY. *USB Chargers sold separately.