LPOW Fingertip Pulse Oximeter With Sound Reminder Function This Pulse Oximeter can be used to measure accurately human Blood Oxygen Saturation(SpO2) and Pulse Rate(PR) through finger.And there have Sound reminder function when readings show. Suitable for exercise enthusiasts like mountain climbers,bikers,skiers, aviators, or anyone is interested in measuring their Blood Oxygen Saturation(SpO2) and Pulse Rate(PR).This device is for Sports & Aviation use only. SpO2 Range: 0% - 100% Pulse Rate Range: 30-250 bpm Relative Humidity:15%-93% non-condensing Air Pressure:70Kpa-106Kpa Operating Attitude:0-2000m Quick Overview of the Pulse Oximeter Based on all digital technology. Advanced DSP algorithm an minimize the influence of motion artifact and improve measurement accuracy of low perfusion. Weight: 52g (batteries included) Power Requirements: 2×AAA 1.5V alkaline battery Frequently Asked Questions Q: How can i turn the volume off if we dont like the beeping? A: The pulse oximeter can turn the volume off if you dont like the beeping,...