1.Solar cell: poly-crystalline silicon / single-crystalline silicon (4v,250mA)2.Light source: super luminosity LED;3.LED quantity: 6 pcs 4.Luminosity colors: red, green, blue, white, yellow (for any choice) 5.Luminous mode: Constant Type (standard luminosity intensity) 6.Work time: more than 15 hours7.Work temperature: -25 to +75 degree C. 8.Material of light: Aluminum alloy and Polycarbonate9.Resist compression: 20tons 10.Waterproof grade IP>67 11.Life: >5 years (Ni-MH) or >15 year ( Super Capacitor) 12.View distance: over 800m 13.Guarantee period:14 months