B-right Pack of 4 Units 5W 3.5-inch Dimmable Recessed LED Downlight, 400lm, 40W Incandescent Equivalent, 5000K Cold White, LED Recessed Ceiling Lighting, LED Ceiling Downlight MONEY AND ENERGY SAVING: 400 lumens, 40 watt replacement uses only 5 watt. Use 90% less energy compared to CFL, incandescent and halogen bulbs DIMMABLE CEILING LIGHTS: 110V dimmable downlight, compatible with most of triac dimmers. No fliker and no dazzling, CE & ROSH, FCC Approved LONG LIFESPN: Over 50,000 hours, great reduce the hassle of frequently replacing your light bulbs in high ceiling, 2-Year Free Warranty INSTALLATION: Built-in LED driver, don't use any external driver and recessed housing, drill a hole and directly connect it with the 110v power supply PERFECTLY MEET YOUR NORMAL LIGHTING NEED: This is an excellent cost performance dimmable led downlight ideal for living room, bedrooms, washroom, kitchen, hallways, stairways, offices and many more commercial or residential place