?Sports Enthusiasts for All Ages?Designed for sports and aviation enthusiasts like mountain climbers, skiers, bikers, aviators, or anyone is interested in measuring their SpO2 and pulse rate. You should only use the oximeter before or after your exercise and remain stationary while you are testing your SpO2. ?Accurate, Fast and Reliable?The pulse oximeter fingertip accurately determines your SpO2 (Blood Oxygen Saturation level) and pulse rate in a few seconds. ?Easy to Use?Our pulse oximeter has an efficient One-Button operation that can check and display in real time SpO2, pulse rate, pulse bar graph. ?Large Screen Display?Large font, high definition, the elderly can also clearly see. ?What you get? 1 x Pulse Oximeter 1 x Lanyard, 1 x User Manual and 1 year warranty. If have any problem , plsase contact us.NOTE: Need 2X AAA battery(Not Included)