... appearance 3. Easy for assembly 4. 50,000hrs lifetime Recessed downlight,Specified specifications and parameters: Hole diameter:85mm Light body ... high purity aluminium Power: 9W (equals to 20W traditional downlight) Color rendering index: 85 to 90Ra Operating voltage: 180 ... Color temperature: 2,700/4,500/6,400K Applications of Recessed downlight: Widely used in super markets, hotels, nightclubs, disco ...