Kafo RicardoI series engine, stamford brushless alternator, smooth sound quality, 38 KVA / 30.4 KW rated power, 41 KVA / 32.8 KW standby power, 220-400 output voltage, 50 Hz frequency, 1500 RPM speed, 0.8 power factor, 1 set rubber mount, 1 set battery, origin China.