Functions: Charge mobile phones, Apple's iPod/iPad, MP3/4 players and camera Flashlight function U-disk: 4, 8, 16, 32, 64 and 128GB (optional) Specification: Polymer Li-ion battery: 3.7V, 4,000mAh USB port: 2.0 Solar panel: 5.5V at 300mA Output: 5V at 1.5A maximum Input: 5V 0.5A Three LEDs as torch lights Four LEDs as power status indicator Dimensions: 140 x 80 x 22.5mm Weight: 220g With CE and RoHS marks Safety and protection: Good-quality polymer lithium ion battery Over-charge and -discharge protection Automatic cut off when charge finished