Chanzon 10 pcs High Power Led Chip 3W Purple Ultraviolet (UV 365nm/400mA-500mA/DC 3V-3.2V/3 Watt) SMD COB Light Emitter Components Diode 3 W Ultra Violet Bulb Lamp Beads DIY Lighting 3Watt / Ultra Violet / 365 nm / 45mil chips / 120-140 degree Emitting Angle Input(DC): 400mA-500mA / 3V-3.2V (Best Match with "Chanzon 450mA 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: 0.48oz / 0.014kg (Pack of 10)