Features: Superior aluminum alloy: tougher texture, lighter weight, and extremely ideal heat dissipation. High brightness: Low brightness degradation. Complied with CE, RoHS standard. Easy to set up and to modify traditional lamp. Specially used for commercial indoor and outside lighting. Energy efficient: Saves up to 90% calories than steady lamps. Long life time: >50,000 hours. Green Technology, secure and surroundings friendly. Specification: LED Downlights, LED Ceiling light, Recessed smooth Dimmable: Yes/No Optional Input Voltage: AC 85-265V (No Dimmable), AC 220V (Dimmable) Beam Angle: 120° Working Temperature: -20~50 °C Working Frequency: 50/60HZ Emitting Color: Cool White 6000-6500K / Warm White 2700-3200K / Netural White 4000-4500K Bulb Wattage: 3W 5W 7W 9W 12W 15W 18W 21W