A simple variable voltage vaporizer with eGo and 510 threading. The voltage settings are easy to change by simply clicking the button 3 times. This battery includes a skirt adapter so it can be used with an eGo threaded tank or any 510 cartridge and still look great. This battery can be charged via Micro-USB port with the included Micro-USB cable. Battery Capacity: 900 mAh Threading: EGO, 510 Includes Micro-USB Cable: Yes Includes Skirt Adapter: Yes Power Method: 5 button click on/off Variable Voltage: 3 button click Variable Voltage