... 180 Lumens 4,Lifespan:50000hrs 3W LED Crystal Ceiling Light Features:a) Easy to install, ... lamps. b) Unique housing design, excellence in heat dissipation, and anti-impact. c) Completely ... electric wave resistant. e) High luminous intensity, low light degradation. f) Special circuit design, each ... j) High efficiency constant current driver, Wide Voltage AC100-240V 50/60Hz input, worldwide application. ...