... -span, 3,competitive price high power led bulb 1,led bulb with hight brightness led chip 2,low-light decline .long ... buildings, corridors and factories.modelSD-5*1W-F (white)SD-5*1W-F (warm white)SizeΦ600mmΦ60mmMaterial typeAluminum+ ... PMMAAluminum+PMMAColor temperature5,500-6,500k2,700-3,500kSingle led power1W1WLED quantity5pcs5pcsView angle30 degree 30 degreelifespan50,000H50,000HInput voltage85 ...