Chanzon High Power Led Chip 20W Purple Ultraviolet (UV 425nm/600mA/DC 30V-34V/20 Watt) SMD COB Light Emitter Components Diode 20 W Ultra Violet Bulb Lamp Beads DIY Lighting 20Watt / Ultra Violet / 425 nm / 45mil chips / 120-140 degree Emitting Angle Input(DC): 600mA / 30V-34V (Best Match with "Chanzon 600mA Constant Current LED Driver") Integrated Chanzon High Quality,High Brightness Chip on Board / Double Golden Wire / Copper Frame) 50000 Hours Life Span (Working Temperature should be less than 60? (140?) with a Heat Sink System) Total Shipping Weight: 1.25oz / 0.035kg (Pack of 1)