50W High power LED Red 660nm & Blue 445nm 4:1 For Plant Grow Light Beads 24-26V QTY: 1pcs led lamp(NO heatsink include,but Heatsink is compulsary when using this led) LED Power: 50w Chip number: 50pcs led arrange: 10 series 5 in parallel , Red blue scale: 4:1 DC Forward Voltage : 24 -26v DC Forward current: 1500-1700mA Beam Angle: 120  Flux:Red 35Lm/W ;blue 45Lm/W Red light wavelength: 660 nm Blue light wavelength: 445 nm