... 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, ... 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 ...