... heat phenomenon 3*1w Mr16 led spotlight,led lamp 220V1.Energy-saving and low cost.the ... Life expectancy 50,000hours,is 10times of traditional lamp cup.it canbe used very long time, ... can save labor cost.3.No mercury,irradiation(UV,IR),environment friendly.4.Wide input voltage range ... on and off.6.Conveniently instantion.Used standard lamp holder,directly changehalogen,incandescent and fluorescent lamps.7 ...