Feature 1、COB LED has good thermal performance, long lifetime, and lower power loss 2、Heat dissipation is good and easily manageable. Only about 30% heat of High Power LED 3、Among different LED components such as high power LED, SMD, dip etc, COB LED is best in less thermal resistance and cooling 4、No dizzy, no uncomfortable glare, no zebra strips 5、Great for making light sources for video camera, fish tank, decoration light, etc 10pcs round COB 3W high power LED chip bulb lamp light Warm White/Natural White/White. 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 has better lighting effect, it is no dizzy, no uncomfortable glare, no zebra strips. When it light up, it looks smooth and like a lighting pane. Features: 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. No dizzy, no uncomfortable glare, no zebra strips. Great for making light sources for video camera, fish tank, decoration light, etc. 3 lighting colors for your choice. Specifications: Condition: New Type: COB LED Power: 3W Current: 300mA Luminous Flux: 300-330LM Color Temperature: Warm White 3000K, Natural White 4000K, White 6500K Lighting Angle: 180 degrees Plate Material: Aluminum plate Wire Material: Gold wire Diameter: Approx. 2.8cm / 1.10in Light-emitting Surface Diameter: Approx. 2cm / 0.8in Color Rendering Index: 70 or more Weight: Approx. 107g Quantity: 10 pcs Package Includes: 10 x Round COB LED chips Note: 1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding. 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.