PyleMeters Model : PVTC320U500 Watt Step-Up/Step-Down Converter500 Watt Step Up and Step Down Voltage Converter Transformer with USB Charging Port - AC 110/220VStep Up : 110/117/120V AC to 220/230/240V ACOr Step down from : 220/230/240V AC to 110/117/120V ACSafety break switch to power on and protect from electric shockTwo universal outlets for output in the frontcomes with 2 spare fusesDimensions: 7''L x 7''W x 5''H Going abroad? Plan on using your computer, cell phone, hair dryer? The PVTC series step up/down voltage transformers offer you a safe, dependable, cost-effective & easy solution to converting voltages from 110-120 volts up to 220-240 volts or from 220-240 volts down to 110-120 volts for both home use and commercial applications. The PVTC320U comes with a power rating of 500w, a heavy-duty power cord, a standard US 3-prong plug, and an American to European outlet adaptor. There are a total of three types of outputs on the front panel. Two are grounded outputs, one designated for 120 volts with a US standard outlet. The other output is for 220 volts only with a universal outlet. The last one is a 5V standard USB jack. And most importantly, all three outputs can be used simultaneously & continuously. For safety, it's recommended by the manufacturer that the voltage transformer's maximum power should be equal or greater than the power rating of your appliance multiplied by 1.5. For example, if you have an appliance rated at 100 watts, you will need to pick a transformer with a maximum power of 150 watts or greater.