About ROCKSTONE POWER We take pride in supporting the military and being a supplier for Tesla Inc. Heavy Duty Conversion: Available in 1000W, 2000W, 3000W, and 5000W models. Patented Simultaneous 3-Mode Output: Features a 5V USB port, 120V USA output socket, and 220V universal output socket for versatile use.
It's a good quality product, and it works perfectly! I'm running a European, 220-volt stereo receiver with it, which draws 600 watts maximum, and there seems to be power to spare.
it has a universal power port, I plugged a kitchen appliance from India that runs on 220 volts 50 hz into the converter and operated the appliance off of 120 volts 60 hz