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 LED display SPORTS ENTHUSIASTS - For sports enthusiasts like mountain climbers, skiers, bikers or anyone interested in measuring their SpO2 and pulse rate during sports and/or aviation. SpO2 and Pulse Rate now faces instead of away from the user for an easy read EASY TO USE - Taking a reading is easy, just clip it on to your finger and turn it on at the press of a button ACCOMODATES WIDE RANGE OF FINGER SIZES - Finger chamber with SMART Spring System. Works for ages 12 and above LOADED WITH ACCESSORIES - Include 2X AAA BATTERIES that will allow you to use the pulse oximeter right out of the box and a LANYARD for convenience. Comes with 12 months WARRANTY and USA based technical phone support