Specifications:Input voltage: 110/220V/AC selectableOutput voltage: 110/220 V/AC, 5V/DC USBDimension:30*22*15cmWeight: 8.5kgNet weight: About 7kgPower cord length: 3 ftWhats in the box:3000W voltage transformerthe voltage transformers offer you a safe, reliable, affordable & convenient solution to converting voltages from 110 volts up to 220volts or from 220 volts down to 110 volts for both home use & industrial applications.The machine is rated at 3,000 watts maximum.There are a total of five outputs on the front panel. Four are grounded outputs, two designated for 110 volts with a US standard outlet, the other two for 220 volts only with a universal outlet. The last one is a 5V standard USB jack. And most importantly, all five outputs can be used simultaneously & continuously.NoteFor safety, its recommended by the manufacturer that the voltage transformers 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.