Whistler Pro-100W 100 Watt Power Inverter (Discontinued by Manufacturer) Features 1 AC Outlet and 1 USB Port. Appointed with 5-Point Adjustable Plug Ground Fault Sensing 100 Watts Continuous power - 200 Watts Surge Capacity (Peak Power) Features 1 AC Outlet and 1 USB Port. Appointed with 5-Point Adjustable Plug Ground Fault Sensing For safety, features five separate points of Electronic Circuit Protection.