Model Number:MBU658W1 Watts:8W Input Voltage:AC 85-265V Input Frequency:50~60 Hz Power Factor:>0.85 Lamp Base:E27/E26/B22 CCT(°K):2700-3500K Lumens :520lm CRI:Ra＞80（DW） Material:Aluminum + PC Dimension:Φ66×L110mm Thanks to the fin's heat-radiating structure, MR's A19 LED bulb in 6W and 8W deliver supreme light output of up to 480lm and are the perfect substitutes for the 40W and 60W incandescent bulb respectively. Dimmable LED Bulb Series delivers a dimmable glow effect, unique design radiating warm light in all directions. MR LED Bulbs are compatible with existing fixture with E27 holder and designed for retrofit replacement of 25W/40W/60W incandescent bulbs. Features: 1.Very low energy consumption, saving of up to 80% energy than the traditional bulb 2.Extremely long life to 30,000 hours 3.Equipped with highly efficient high-power LEDs 4.Direct mains connection to main power 5.No UV, No IR 6.Shock and vibration-proof thanks to plastic and metal casing Application: They are particularly suited for public areas such as lobbies, corridors, museums, cosmetic counter, art galleries, display cabinet, stairwells, where the light is always on.