1 led nail machine for dry 2 fast dry time 3 no harm,environment ,energy ... 90 seconds,its can vary based gel .5 magnetic tray for effortless ,through sanitizing.Specification Volt DC12V / AC 220/240 , 110V ... apply manegtic polish ,immedietly put you nail under manegtic slice for at least k10 secs.(the closer and the better .but ... lamp to dry it up and then apply top coat for protection.