Prestige Medical's Basic Fingertip Pulse Oximiter provides quick and easy fingertip measurement of Sp02% (Oxygen Saturation) and pulse rate. It features a low power consumption easy to read red LED screen with an auto shut-off feature to conserve even more power. The lightweight and compact design is easy to carry and even easier to fit in a pocket. Included in the package is 2 AAA batteries for up to 30 hours of continuous use, a soft silicone protective case, and a lanyard. Prestige Medical offers a one year full manufacturer's warranty.