• Output USB：micro usb.(You will receive the package): 1 pcs USB mobile power
• Input Voltage:1.5-3V,Output voltage:5v,Output current:500MAH-1500MAH,Use 2 pcs AA battery(The seller does not provide the battery)
• Color:Black，Red,Blue Optional.（Size）: 17mm*17mm*17mm
• DC-DC quick charging boosted circuit buile-in,use two pieces battery can boosted to 5V,transter efficaency can reach to more than 98%,Use new 5#AA battery can charge the android phone(2500MAH battery) to 40% within 30 minutes.
• Built in protection circuit, When the AA battery used or the device charge full,it will stop charge by itself.Only need two pieces AA battery that very easy to buy anywhere then can charge your android phone/MP3/MP4/PSP/GPS anytime