LED MAR16 lamp:3X1W,with high qualified LED chip,lumen:160-220Lm,50000hrs lifetime,CNC aluminum housing.eco-friendly LED MAR16 lamp: Type: YY-MR16A ... efficiency ,low light decline, long lifetime 4. Good heat dissipation with professional designed aluminum alloy housing 5. No mercury, eco-friendly ... attention to the voltage before using 4. Indoor use only 3W LED MAR16 LAMP