Feature: Oil alarm system protect the costly engine; circuit braker strengthen safety; large fuel tank enable long stable output; easy to operate and maintain; ideal power supply to back up your power system; Parameters: Engine: air-cooled, 4-stroke gasoline engine; starter: recoil/electric; fuel tank capacity: 2.5L fuel consumption: 2.7L/H; Rated frequency:50hz/60hz; Rated output:5kw; Dimension: 680x510x540mm continious working time: 9hours;