Length: 2 7/8"
Compatible with all eGo type Atomizers/Clearomizers, 510 Series Atomizers and Cartomizers.
Power ON/OFF: Press the button 5 times rapidly (within 2 seconds) to power the battery ON or OFF. The LED will blink when switching modes. When the battery is in lock mode, the button is disabled and the battery will not power up your atomizer/coil.