1, does not need to adopt the battery , environmental protection energy-conservation; 2, adopt the exquisite mechanical structure and high-efficient miniature generator ; 3, adopt and import ultra and bright LED and do the light source , energy-efficient; 4, can dispose connecting wire and cell-phone to connect , charge for the cell-phone ; 5, ultra and high light white LEDs are put in the products front, the lighting time can be as long as more than 30 minutes in hand minute, one minute such as time such as conversation such as cell-phone, await the opportune moment more than 30 minutes such as time; 6, the life-span of light source is in above 100,000 hours.