Fingertip Pulse Oximeter is intended for non-invasive spot-check oxygen saturation levels in the blood and heart rate. Large easy-to-read multi-view LED display screenDisplays SpO and pulse rateLow power consumption, Auto-off functionApproximately 30 hours of normal operationAccommodates a wide range of finger sizes from pediatric to adultIncludes lanyard and two AAA batteries.Perfect for sports enthusiasts to measure oxygen saturation and pulse rate