1.Solar panel: single-crystalline silicon (3v,100mA) 2.Power storage solution: Ni-MH (1500mAH) or Super Capacitor (2*120F) 3.Light source: super bright LED 4.LED quantity: 4pcs 5.LED color: red, green, blue, white, yellow 6.Luminous mode: constant Type 7.Working time: more than 15 hours 8.Working temperature: -25degree to +75degree. 9.IP grade: IP67 10.Resist pressure: 30tons 11.Material: Stainless steel 12.Size:120X38mm 13.Lifetime: 3-5years(Ni-MH battery) or 15years (super capacitor)