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: 4 or 6PCS 5.Led color: red, green, blue, white or yellow 6.Luminous mode: flashing type or constant type 7.Work time: more than 108 hours for flashing type; more than 24 hours for constant type after the battery is charged fully. 8.Working temperature: : -25degree to +75degree 9.IP grade: IP67 10.Resist pressure: 30tons 11.View distance: over 800m 12.Material:Aluminum alloy and Polycarbonate 13.Lifetime: 3-5years(Ni-MH battery) or 15years (super capacitor)