Features: Heating wire: nickel-chromium alloy wireShell material: environmentally nice ABSRated power: 120wWorking voltage: 110V/220VRated frequency: 50HZ-60HZHeating cord width: 3mmProduct size: 35X13X6CMVacuum sealing time: 10 secondsSingle sealing time: 6~8 secondsVacuum degree: 60KPa