1.high intension, high isolation wire, iron core piled close up,super quiet. 2.dousing white paint 1.Using high intension, high isolation wire, iron core piled close up, providinglonglife, super quiet.2.The junction being anti-hire nylon, bottom base 1mm quality steel rolling.3.Dousing white paint.220V/240V/60HZ from 20W/30W/40W/58W Ballast