Product DetailsSpecification Power: 10W/20W/30W/40W/50WColor: Cold White 6000K/Warm White 3000K/Natural White 4000KSize: 19*19MM=0*0 and parallel mode: 10C2B/10C4B/10C6B/10C8B/10C10BChip crystal size: 18*35Chip substrate thickness: 1mmLumens: 120lm/W (120 lumens in line with 1 watt, lumens is the unit of brightness), then 10w=120*10=1200lm/20W=120*20=2400lm/30W=120*30=3600lm/40W=120*40=4800lm50W=120*50=1500lmInput voltage: DC 30-33VInput current: 300mA/600mA/900mA/1200mA/1500mACRI: Ra≥90Chip material: Gold thread 99%Imported Bridgelux crystal chipSuperconducting aluminum substrate W/(m·K)=4