Harkila Heat Power Bank Ver.2 is designed specifically for use with all the Harkila heated products. The Harkila Heat Power Bank has a capacity 10000mAh and input/output of 5V/2.0A. Comes with protection against short circuits, over voltage, incorrect connection and overheating and when not in use, it will automatically put itself into standby mode to save battery 2 x USB A-5V/2.1A Charge time is around 6hrs and it can be recharged approx 500times Can be used in temperature between -10C and 45C Micro USB 5V/2A LED Energy indicator Rubber coated protection Sleeve. Available in Black Size: One Size