Professional Digital Finger Oximeter,

Accurate and Reliable: Accurately determine your SpO2 (blood oxygen saturation levels), pulse rate and pulse strength within 8 seconds and view it comfortably on a large digital LED display.
SpO2 Full Value: The ONLY pulse oximeter that can read and display up to 100% SpO2.
Use the Crowd: Accurately monitors SpO2 and pulse on the go, suitable for mountain climbers, skiers, cyclists, aviators or anyone who wants to measure their SpO2 level.
Low Power Consumption: The oximeter automatically shuts off when there is no signal within 20 seconds and provides up to 24 continuous hours of battery life.
Lightweight and Portable: Weighing only 50 grams, convenient to carry on its own or inside your gym bag or backpack. Attach the supplied lanyard to the case or directly to the oximeter