1.A General Trend of Commercial Lighting. 2.Replace MR16-50W halogen lamp in most conditions. 3.Saving 3/4 energy comparing with MR16-50W. 4.8 times longer life than halogen lamp. 5.All-in-one design with electronic ballast, more convinient. 6.Replacing MR16-50W quartz halogen lamp by this product, you can buy 7 pieces more with the saved electricity fee per year.(accounted by 10h/day, 1CNY/KWh) 7.Optional socket: G5.3 and GU10. For more info, pls visit /en/MR16.htm