mibest OLED Finger Pulse Oximeter, O2 Meter, Dual Color White/Black
【Accurate and Reliable】Accurately determine your SpO2 (blood oxygen saturation levels) and pulse rate and strength in 4 directions, 6 display modes, and 10 levels of adjustable brightness.【Plethysmography Waveform】The SpO2 Waveform measures the change in the volume of arterial blood with each pulse beat which helps determine the optimal time to take a reading.【Compact and Long…