500W Step Down/Up 220/240V to 110/120V Voltage Converter EU to US Step Up/Down Converter 110V to 220V, 220V to 110V with US power cord and US to EU Adapter

[Voltage transformer (110V to 220V, 220V to 110V)] Easily steps up voltage from 110V to 220V or steps down from 220V to 110V.
Critical Note: Set the transformer to the correct voltage before powering it on. [Multi-function] The Voltage Transformer can be used with any kind of appliance or device up to 300 watts, like CPAP Machine, Sewing machine, Laptop, Mobile phones, audio amps, TV, Xbox, etc. [AC outputs] 1 US Standard Socket for 110-120V appliance (s) & 1 Universal Sockets accept all types of plugs except the Big South African plug for 220-240V appliance (s). The transformer can be used in countries which voltage are 110V120V or 220V240V such as US, EUR, UK and more. [US to EUROPE Travel Plug Adapter] Comes with a US power cord and a US-to-EU adapter for direct use transformer in Europe. This Type E/F plug adapter is your perfect travel companion for most European countries such as France, Germany, Greece, Hungary, Iceland, the Netherlands, Korea, Norway, Poland, Portugal, Romania, Spain, Russia. [Note] 1) Switch the input voltage selector on the back to the correct voltage before turning on the power (110V in US/CA/MX). 2) The transformer only converts the voltage, not the frequency.

If your appliance is not compatible with 50/60hz, it will have an effect on the usage effect