Emergency cell phone charger 1.Truly wireless battery charger for mobile electronics 2.Ideal to use as a trael charger,thus eliminating the need to carry t bulky device chargers. 3.Use one replaceable AA battery or plug in . 4.A safe stream of power to charge cell phone and shuffles. 5.Up to 3 extra hours of talk time 7.Aluminum Body. 8.Phone connector selection(Pls let us know the type of your phone ,as it need to fit with our charger.we can change the charger type according to your request) 9.Charging current: 300mA max(varies with usage conditions) 10.Adds up to 240mAh to devices battery per AA battery. 11.Typical efficiency: 87% 12.Automatically starting up when current is drawn at the output(upon connection to device) Mini chargers and size as small as two fingers.