Seventeam ST-550PWL. Nominal power: 550 W, AC input voltage: 100 - 240 V, AC input frequency: 50/60 Hz. Noise level: 20 dB. Weight: 2200 g. Mean time between failures (MTBF): 100000 h. Operating temperature range (T-T): 5 - 50 °C, Storage temperature range (T-T): -40 - 70 °C, Operating relative humidity range: 20 - 85 %