1.     led light source:3W

2.     forward voltage:AC110V/AC220V

3.     chip:semileds

4.     Ra＞80

5.     brightness declines :3-4%/1000hours

6.     the time of warranty :18months

7.     the material of shell:aluminum

8.     the emitted color :pure whithe,warm white,RGB and so on

9.     beam angle :30-60°(the brightness of white color can instead of 7W save-energy  light)