ResMed Quattro FX for Her Full Face CPAP Mask System with Headgear Bathroom Safety Flow Settings Pulse Mode Continuous VOCSN Flow Settings Pulse Mode Continuous Mode Setting 1 3 hours and 24 minutes 2 hours and 54 minutes Setting 2 3 hours 1 hour and 36 minutes Setting 3 2 hours and 12 minutes 54 minutes Setting 4 1 hour and 42 minutes Setting 5 1 hour and 18 minutes Setting 6 1 hour and 18 minutes It’s also engineered to deliver maximum comfort while you sleep — the patented dual wall The Quattro FX comes with Spring Air technology that enables the cushion and frame to be responsive and flexible The streamlined design is unobtrusive and covers less of the face