Compact size, 72mm (L) x 33mm (W) x 22mm (H)
Built-in 2600mAh 18650 lithium battery
Input: micro USB port with 0.5A/1A at 5V DC smart charging current according to different power sources
Output: lightning connector up to 1A maximum at 5V DC
LED light to show battery level and charging status
Multifunction button (power on/off, battery level check)