Description A variable voltage battery with 510 threading. Modeled after a key fob so it can discretely and conveniently go with you wherever you go. The new KeyBD X design features softer, more sleek curves with a rubberized finish and a textured grip that all combine to make it super comfortable to hold. On the inside, the updated KeyBD X features a 650 mAh battery and also now includes Pre-Heat functionality and a battery life indicator. The voltage settings are easy to change by simply clicking the button 3 times. This battery can be charged via Micro-USB port with the included Micro-USB cable. Battery Capacity: 650 mAh Threading: 510 Includes Micro-USB Cable: Yes Power Method: 5 buttons click on/off Variable Voltage: 3 button click Variable Voltage
