4000 Watt Step Up and Step Down Voltage Transformer with Built-in Voltage Regulator Works with 110V-220 Volt Worldwide Model VS-4000 Converts 110/120 V to 220/240 V OR converts 220/240 V to 110/120 V (switch is on back of unit) This Unit Can Als Be Used Just As A Stabilizer For Stabilizing The Fluctuation In The Power. 5 outlets on front of unit (outlets accept 3 or 2 prong US plugs and 2 prong Euro/Asian plugs) Insulated power cord is hard wired with a European Shucko plug also good for Asian outlets. Grounded American adapter included. Heavy-duty metal casing and durable design. FUSE PROTECTED.