Note:The Led PCB lighting fixtures supply want hook up with like minded driving force for it and can now not direct to AC220V or DC12V. LEDmust be additionally added with a radiator/cooling fan: LED downlight sourcePower: 3W 5W 7WLEDs: SMD2835 Size: 32mm 40mm 48mm 48mmLuminous Flux: 100lm in line with wattagePower factor: 80%CRI: >95Driver: choose 3/5/7x1W driverMaterial: aluminum plate boardColor tempreture:Warm white 3000-3500KNatural white: 4000-4500KCold white: 6000-6500KCertificate: CCC CE and rohWarranty: > 50000 hoursApplication:Widely utilized in Bulb light, Ceiling lighting, spotlight, Indoor Lighting, Special lighting,bulb light, monitoring light,spotlight, floodlight,dinner lighting fixtures and so included:10 x 1piece LED lamp board