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: 108 hours above for flashing type; more than 24 hours for constant type after the battery is charged fully. 8.Working temperature: -25degee to +75degree 9. IP up to 67 10. Resist pressure: 30tons 11. Material: aluminum alloy + polycarbonate 12. Lifetime: 3-5years(Ni-MH battery) or 15years (super capacitor)