frequency: 50/60Hz Rated output:4.2/5KVA Voltage:230/120v Rated current:18.3/20.8/41.7A DC output:12V/8.3A single phase Engine; TD186F Type: single cylinder,vertical 4 stroke, air cooled Starting: electric Displacement:406cc Engine speed:3600rpm low oil consumption system Net weight: 165Kgs Dimension:910*520*740mm structure: silent and trolley type