Pressure Range: 4-20 cmH2O Work Mode: AUTO Material: Compound Material Type: CPAP Machine Work Mode: CPAP Auto Titrate Noise: <30DB Dimensions: 290 * 196 * 134 mm Warranty: 1 Years Assurance Mask Size: S M L Color: Grey Certificate: CE FDA ISO Screen Size: 3.5 inch Pressure step: 0.5(cm H2O) AC Power Consumption: 100 - 240 V AC, 50/60 Hz, 2.0 A max