... solar lighting system 4) Can be installed to any place with E27 socket 5) RoHS 1) Description:12V inputfrom solar ... power system;soft, warmand elegant light that has a lamp life of up to 40,000 hours, which is ... theequivalent of running lamp for 4.5 years at 24 hours per day; ... Span (Hours)40,000* Fluxtest condition: 20°C, whole lamp, with frosted PC cover, tolerance: ±5%