1.  288pcs high efficiency LEDs; 
2.  Rated Luminous Flux: 4700lm; 
3.  Viewing Angle: 100~120 degree; 
4.  Color temperature: 6500K-500K; 
5.  Central Light Intensity: 1700cd; 
6.  Color Render Index:  > 75; 
7.  Work Temperature: -20℃ ~ +50℃.