ACCURATE AND RELIABLE - Accurately determine your SpO2 (blood oxygen saturation levels), pulse rate and pulse strength in 10 seconds and display it conveniently on a large digital LED display. SPORT/HEALTH ENTHUSIASTS - For sports enthusiasts like mountain climbers, skiers, bikers or anyone interested in measuring their SpO2 and pulse rate. More Details: Reliable accuracy and durability for fingertip pulse oximeter. Four Colour LED Display, 2 Direction Display adjustable. Low voltage indicator, Real-time spot-checks. Low power consumption, 50 hours continuous to work. Low Perfusion ≤0.4%. Small and light weight, convenient to carry. Easy to Use: Very portable, it is able to measure SPO2 and PR values quickly andprecisely for home use, medical, sports and more.