3W ED Downlights have five advantages.1.Sturdy and durable: used environmental radiating aluminum,firm housing, better shock resistance and easy to transport. 2.Easy installation: don't alter any other part and install directly same as the traditional downlight. 3.Safe and reliable: the special design of lighting protection, over-current protection, over-voltage protection and short-circuit protection benifits your health and property. 4.Broad-spectrum: available for all kinds of commercial lighting and residential lighting. 5.Certification: CE, FCC, and ROHS.