The John Bunn® O2 Premier Oxygen Concentrator was designed and developed in response to the recent changes in concentrator reimbursement. Featuring a durable plastic outer shell with convenient top handle for quick portability; easy-to-read display screen and controls; power loss alarm; and both high and low pressure alarms, the O2 Premier has all the elements required to deliver a reliable, high level of oxygen. In addition, the dual cooling fans quietly and efficiently reduce heat buildup inside the compressor housing, greatly extending the lives of the compressor and sieve beds. A minimum number of moving parts results in superior reliability and easy servicing. And even at flow rates up to five liters per minute, the O2 Premier supplies consistently high levels of oxygen concentration.