Chanzon High Power Led Chip 50W Warm White (3000K-3500K/Input 1500mA/DC 30-34V/50 Watt) Super Bright Intensity SMD COB Light Emitter Components Diode 50 W Bulb Lamp Beads DIY Lighting 50Watt / Warm-White / 3000 K-3500 K / 4500-5000LM / 30mil chips / 120-140 degree Emitting Angle Input(DC): 1500mA / 30-34V (Best Match with "Chanzon 1500mA 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: 1.27oz / 0.036kg (Pack of 1)