Talk and charge simultaneously with this ultra slim 2300mAH emergency phonecharger. An excellent back-up power source for smartphones and small USBdevices, it's an easy way to charge essential electronics on the move. Ascompact as a credit card yet powerful enough to fully charge a smartphone injust 1.5 hours, slip this ultra slim power bank in your wallet and never runout of battery life. Pre-charge power levels may vary Charge time may varydepending on model 2300mAH slim USB emergency phone charger Compatible withmost smartphones, mobiles & small USB devices Charged up & ready to use Fullycharges a smartphone in 1.5 hours Power bank charges completely in 3 hoursQuantity Per Pack: Single Material: Aluminium, Li-ion Battery, PC, PCBA BoardCautions: Read all information and instructions before use and only use asdirectedSee instructions for full details Electrical Rating: 5v (max 1 amp)Additional Info: Micro USB input/ouput: 5V/1A