COB LED has good thermal performance, long lifetime, and lower power loss. Heat dissipation is good and easily manageable. Only about 30% heat of High Power LED. Among different LED components such as high power LED, SMD, dip etc, COB LED is best in less thermal resistance and cooling. COB LED is better lighting effect,it is no dizzy, no uncomfortable glare, no zebra strips. When it light up, it looks smooth and like a lighting paneColor :Warm WhitePower: 3W. Voltage: 9-12V DC.Current: 300mA.Luminous Flux: 280LM.Color Temperature:Warm White3000-3500KLighting Angle: 180 degrees.Package Include:1x 3W LED ChipNote: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.