cell:single-crystalline silicon (3v,*5mA)
Storage battery: Ni-MH (***0mAH) / Super Capacitor (**0F)
Light source: super luminosity LED;
LED quantity: 4  pcs                                                 
Luminous mode: varying type /Constant Type
Work time: **8 hours above for Varying Type; and more than *4 hours for constant type(standard    luminosity intensity)
Work temperature: **5 to **5 degree C.
Material of light:  Aluminum alloy and Polycarbonate
Resist compression: *0 tons                                          Waterproof grade IP>*7                                               Life: >5 years (Ni-MH)  or >*5 year ( Super Capacitor)               View distance: over **0m