Accurate and Fast: This oxygen monitor can accurately determine your SpO2 (blood oxygen saturation levels), heart rate and pulse strength in 8 seconds and display it conveniently on a large digital LED displaySport Enthusiasts: Suitable for mountain climbers, skiers, bikers, aviators or anyone interested in measuring their SpO2 and pulse rate while on the move. You should only use the pulse ox before or after your exercise. Also, you must remain stationary while the pulse oximeter measure your pulse rate and SpO2 levels. This device is for sports and aviation use onlyWide Rang of Applocations & Long Battery Life: This blood oxygen finger meter light and compact, accommodates wide range of finger sizes,low power consumption long battery life, automatic power off after 16 secondsClear and Easy to Read: This blood and oxygen monitor have LED display, you can read in high light clearly.Our finger oxygen sensor will check and display in real time SpO2, PR, Pulse bar graph which are very easy to understand