... 4. CE, RoHS,SAA factory price lwith high quality led downlight 3w 4w technolgy parameters product nameled downlightColor temperature 2700-3500k/4000-5000k ... Φ105*75mmHole size 80mm main material Aluminum/pcLED downlight Item:1,led downlight can make:3w,5w,6w,7w,9w,12w,15w ... used with Quasar constant current led driver CLD-A35364)50.000 hours life time (17years at 8hours a day )5)Reverse polarity ...