... 5. 4 years warranty Hottest high power led 50w 10000kSpecification:Power:50wattCurrent:1750mAVoltage:30-34v Luminous:5000-5500lmLife ... 20w, 30w, 50w, 80w, 100w 200W 300W high power led diodeAvailable chips:US bridgelux,Taiwan Epistar45mil,Taiwan Epistar35mil,Taiwan ... lumens,better light-emitting uniformity.Led base:red/black copper base ,for better thermal conductive/cooling ,thermal conductivity ...