The Chad Evolution Electronic Oxygen Conserver offered by Drive Medical is a superior oxygen saturation device. The Evolution delivers a uniform oxygen pulse which can range from 14 breaths per minute to 40, supporting a wide range of needs and activity levels. The Evolution Electronic Oxygen Conserver senses a breath and delivers oxygen only in the first half of the inspiratory cycle, resulting in no wasted oxygen while delivering an effective oxygen dose. In addition, the Evolution has a 5:1 savings ratio and liter flow settings between 1 and 7 LPM providing a high level of conservation while offering versatile liter flow options. Product Features Delivers a uniform oxygen pulse at increments: 1, 2, 3, 4, 5, 6, 7 Plus CF preset at 2 LPM |Minimum 2-year battery life utilizing 2 AA batteries | Delivers a 5:1 savings ratio from 14-40 breaths per minute | Senses a breath/delivers oxygen in the first half of the inspiratory cycle | Operating pressure range: 200-3000 PSI | Weighs only 14.9 ounces with batteries | Single push button selects the equivalent LPM dosage settings | Auto shut-off feature conserves battery life | Fits easily in virtually any carry bag Overall Product Length Overall Product Width Overall Product Height 8" 6" 4" Actual Product Weight Product Weight Capacity Product Warranty Info 1.31 lbs Limited Lifetime
