... via AC adaptor or USB Can be power bank for mobile phone Can be hand warmer at the same ... and hand warmer.Built-in rechargable lithium battery.Power bank for I Phone, HTC,NOKIA, charging via USBThis reusable ... in winter.Feature:1:LED light2:Portable3:Has mirror function4:Charger for I Phone, HTC , Nokia and other mobile phone.5 ... back aching,cramps arthritis pain. 2500 mah power bank for mobile phone