1.Use high efficient 1w LED as the light source , base on 200*1 high power LEDs with metal cover , built in 4 pcs 45w constant current source , it will be more energy efficient 2.Input voltage : 85-264V£¬easy to use and safty , suitable for all the countries . 3.Lifespan : over 50000 hours. 4.Built-in 6 pcs fans , solve the heat dissipation excellently to keep the product in normal use .