When critical times dictate the need for oxygen saturation data as well as respiration and pulse rate, the Nonin 2500 PalmSat Digital Oximeter is the answer.  

• SIMPLE two-button operation and integrated self-test
• COMPACT 7.4 oz unit for easy handling and portability
• LARGE LED DISPLAY for maximum visibility - easy to verify operation; Nonin's colour-coded perfusion indicator alerts user to changes in pulse signal that may affect SpO2 data
• FLEXIBLE POWER OPTIONS - 4 x AA batteries,  rechargeable NiMH batteries or AC power with optional NiMH charging stand - see below
• EFFICIENT - 100 hours typical continuous operation on 4 x AA batteries, or 45 hours continuous operation on rechargeable NiMH Battery pack (with 90 min fast recharge) & continuous operation in charging stand
• ALARM feature