... % 3,material:Aluminum 4,CE and ROHS,2 years warranty 2013 newest style of sharp led downlight Technical parameters Product type ... 3.Less than 6% light attenuation , 20,000 hours lifespan4.Instant start, no speckle, no flickering, no humming5. Excellent heat dissipation ... 6.Advanced constant current driver.7. Professional thermal management.8. Instant on, no warm up time required.9. Anti-shock, anti ...