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.Working temperature: -25degree to +75degree. 9.IP grade: IP67 10.Resist pressure: 30tons 11.Material: aluminum alloy and polycarbonate