Lemonbest 6W LED Panel Light + LED Driver , Round Recessed Downlight, Warm White Inner diameter: 77mm; Outer diameter: 120mm; Height: 15mm; Open hole: 102mm/4" Input Voltage: AC 100V-245V; Warm White(2600k-2800k); 10,000 hours lifespan 30pcs super bright SMD 2835 Led; well-controlled beam angle; low power consumption Safe and easy to install, no warm up time required, no noise and no flickering Widely use and environment friendly without IR and UV radiation