Solar cell: single-crystalline silicon (4v,400mA)Storage battery: Ni-MH (2*2000mAH) / Super Capacitor (2*120F)Light source: super luminosity LED;LED quantity: 6 pcs Luminous mode: Constant TypeWork time: more than 40 hours (standard luminosity intensity)Work temperature: -25 to +75 degree C.Material of light: Aluminum alloy and Polycarbonate and stainless steelResist compression: 20 tons Waterproof grade IP>67 Life: >5 years (Ni-MH) or >15 year ( Super Capacitor) View distance: over 800m Guarantee period:14 months