Size 1 represents the American plug， size 2 represents European plugDetails:American Standard，European Standard.Flat plugs are American Standard， the round plug is the European standard.Power Input: 110VPower:9WMaterial:PPColor:white， pinkWeight:580gVoltage: 220V-240V/50Hz Product Size: app 26.8X9.3X11cmPack Size: app 27X 9.8X11.3cmPackage Included:1 x Brand New UV Nail Curing Lamp1 x 9 Watt UV Lamp TubeUsage:1.Plug in the power2. Put hands or feet inside it， and then press the square button on the rear of this machine， it will start to work finally.