1.Solar panel: poly-crystalline silicon or mono-crystalline silicon 2.Power storage solution: Ni-MH battery or Super Capacitor 3.Light source: super bright LED; 4.Led quantity: 4PCS 5.Led color: red, green, blue, white or yellow 6.Luminous mode: flashing type or constant type 7.Working time: more than 108 hours for flashing type;more than 24 hours for constant type after the battery is charged fully. 8.Work temperature: -25degree to +75degree 9.IP grade: IP67 10.Resist pressure: 20tons 11.View distance: over 800m 12.Material: Polycarbonate 13.Lifetime: 3-5years(Ni-MH battery) or 15years (super capacitor)