.6W Ultrathin LED Ceiling Light Product Description 3 years warranty ,CE&RoHS, UL pending ; LEDs of lamps: Epistar SMD3528 ; Raw material: Aluminium alloy + optic PMMA ; New High Efficiency Constant Current Driver, Special Circuit Design, Each Group of LEDs work Separately, Avoiding any problem of Lighting output caused or influenced by single faulty LED. LED Ultra-thin Ceiling Light Features: Item Description Item Description Input Voltage AC 100~240V Life Time >50000 hours Ceiling Light Input Voltage DC 24V Luminous Flux 550lm White 500 lm Warm White LED Quantity 112 pcs 3528 SMD Certificates: CE,RoHS,CCC Power Consumption 9.6 W Weight 348g Operating Temperature -20 ℃~+50℃ Size Φ170 x 26mm Storage Temperature -30℃~+60℃ Punch Φ150mm Waterproof IP20 View Angle 120 degrees LED Lumen Attenuation: Operating Time( hours) Lumen Decrease (%) 5000 2.3 10000 5.4 20000 11.5 50000 25.2