LEMONBEST Dimmable LED Ceiling light 7W Round Recessed LED downlight for Ceiling Indoor Cool white 7 pcs high power Epistar LED chips inside;Cool White(6300-7000K) Beam Angle: 120 degree Lumen: 100LM/W;Input voltage: AC/100-245V with dimmable power driver Dimension (D*H):110x72mm4.3x2.8inches);Cut-Out(open the hole): 80mm (3.2inches) 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.