Q1 series anti-glare ceiling lamp Hidden light source, unique design for anti-glare Used high thermal conductivity aluminum as heat dissipation material Variety of colors and sizes available Power available 3w-7w Widely used in decoration and commercial outlets. Q1-3 power:3w Input voltage:100-240vac Power factor:above 0.85 Color temperature: 3000k-6500k Luminous flux:240-270 lm Lifetime: 50000h Q1-5 power: 5w Input voltage:100-240vac Power factor:above 0.85 Color temperature: 3000k-6500k Luminous flux:400-450 lm Lifetime: 50000h. Q1-7 power: 7w Input voltage:180-220vac Power factor:above 0.85 Color temperature: 3000k-6500k Luminous flux:560 lm Lifetime: 50000h. 2.5".