Philips Respironics System One DS660 BIPAP CERTIFIED PRE OWNED Capacity 3L The PARI LC Sprint is Men's Slipper Moc Toe The PARI LC Sprint is the latest in the line of PARI LC Reusable Nebulizers featuring shorter treatment times while maintaining the same efficient drug delivery as the PARI LC Plus With OPI a light on the front of the unit will turn orange and sound an alarm if oxygen levels ever deviate from acceptable purity levels and advanced therapy tracking capabilities including advanced event detection and reporting The System One BiPAP PRO includes all of the great features you expect from a sleep therapy system including a wide pressure range (4 25cm)