We currently have 4 different units available for sale that vary in power output and options slightly. First up we have a 12 volt, 75 amp unit that puts out 900 watts of power. Second is our 75 amp unit with a 5 volt, 3 amp usb port added. Third is the big brother to the 75 amp unit that puts out 12 volts, 85 amps at 1025 watts of power. Our forth unit is our flagship model which is a 12 volt, 85 amp at 1025 of power output with a 5 volt, 3 amp usb port added. These specs are with 110 AC input. Each of these can be used with 220AC and will yield a slightly higher output at 220 AC.