... voltage 2,widened cushion with compensation 3,doubled armrest 4,LED operating screen 5,sensor light FEATURES:1,24V safe voltage2 ... ,widened cushion with compensation3,doubled armrest4,LED operating screen5,sensor lightSTANDARD EQUIPMENTS:1-High speed handpiece connector ... 20'feet container40pcs in a 40HQ container hot sell dental units/dental chair