Nonin PalmSat Pulse Oximeter w Alarm Diagnostics Dual Channel * A low voltage Style:Right Ear Dual Channel * A low voltage AC stimulator * Features tetanize variable surge and variable pulsation modes (1 80pps) * Accomodates bifurcated four pad applications * Outdoor Setting – Decreases high & low audio frequencies (whistling unit * AA rechargeable batteries and AC power with charger stand sold separately * Memory for 72 hours of data storage * 3 Year Manufacturer's Warranty * Efficient 60 hrs of battery life * Simple Easy two button operation * Unit beeps when reading appears * Comes with the Adult Articulating Hinged Finger Sensor and 4 Alkaline AA batteries * Alarms Audible Visible Pulse Rate High Low SpO2 High Low Low Perfusion * Compact Size 7