110-120 volt unit to use in North America. (Do not use in countries with higher voltage. DO NOT ORDER THIS MODEL IF YOU WILL USE IT OUTSIDE NORTH AMERICA. Instead order our Model 300SSE to use in countries with 220-240 Volts such as UK, etc. or Model 300SSF to use in countries with 230 Volts such as EU, etc.) You must order the correct model when ordering as you can not ask us to change the model after you have ordered.