Product name:UNDERGROUND LIGHTING Specificationï¼Â 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: 6PCS 5.Led color: red, green, blue, white or yellow 6.Luminous mode: constant Type 7.Working time: more than 40 hours after the battery is charged fully. 8.Working temperature: -25°C to +75°C. 9. IP≥67 10. Resist pressure: 20tons 11. Material: aluminum alloy and polycarbonate 12. Lifetime: 3-5years(Ni-MH battery) or 15years (super capacitor)