Product size:110X70X12.5mm

Peak power supplied by photo cell: 0.8W

Operating voltage: 5.5V

Charging current: 500mA

Battery capacity: 3.7V/1500mAh

Adjustable utput voltage: 3.7V to 6V 

Output current: 500mA

Charging time for build-in battery: 8~10 hours by solar energy, and 2~3 hours by AC adaptor.