1.4pcs LED 2.Aluminum alloy and Polycarbonate 3.30 tons resist compression 4.View distance: over 800m

cell: single-crystalline silicon (3v,75mA)Storage battery: Ni-MH (1200mAH) / Super Capacitor (120F)Light source: super luminosity LED;LED quantity: 4  pcs                                                  Luminous mode: varying type /Constant TypeWork time: 108 hours above for Varying Type; and more than 24 hours for constant type(standard    luminosity intensity) Work temperature: -25 to +75 degree C. Material of light:  Aluminum alloy and PolycarbonateResist compression: 30 tonsWaterproof grade IP>67Life: >5 years (Ni-MH)  or >15 year ( Super Capacitor)View distance: over 800m