Lemonbest&trade; High Power Dimmable Recessed LED Ceiling Down Light Fixture 7 watts COB LED Spotlight Flood Lamp Cool White White for Dimmable Cool White(6300-7000K); Beam Angle: 60 degree LM:100LM/W; Size:D4.3*H2.3inch ( 108x58mm); Cut-out:3.6inch (90mm) Perfect for home use, office, store, super market, bars, cafe, exhibition, halls, museum hotel,window display and other lighting. 48 hours aging time, 5 steps strict quality control; 85% saving on the electricity bills,and greatly reducing maintenance cost. Common problem resolution: If the light cannot be dimmed normally, the problem is very likely to be your dimmer, please use a LED dimmer to try it again or contect us directly.