LED Source: 6 High Power LED with 1W each Optical Specifications: LED Colour Cool white Neutral white Warm whiteSystem Lumens 650 Lumens 615 Lumens 590 LumensTypical CRI 80 80 85 Housing: Aluminium housing with heat sink for optimum thermal mangement of L.E.D Source. Dimensions: Height=62 , Cutout=115 , Outer Diameter=127.5 Electronic LED Driver: Input: 240V (160-275)AC 50 Hz.Output: 24 -36 V DC 300 mA Installation: Recessed mounting with the help of 2 nos. spring loaded clamps in false ceiling.