Giant 50Watt blinding white COB LED is 40mm x 46mm in overall size with a 28mm x 28mm active area. The active area consists of 120 powerful white LED chips. Operates on 12-14VDC @ 3.750Amps. This LED develops 4,000 lumens and produces a great quantity of room filling blinding white light 10,000K. Even though this LED has an aluminum base, it must be mounted to a heatsink.