?Ultra-long standby - low energy consumption and safety? blood oxygen monitor Using scientific and reasonable algorithms to reduce energy consumption, no need to charge often, automatically shut down after 10 seconds of inactivity in order to extend the life of the battery, oxygen monitor fingertip and will be intelligently controlled when fully charged to avoid damage caused by overcharging. This device is intended for sports and aviation use only, not for medical use. ?HD OLED - 4 direction display?Pulse Fingertip Oximeter Ultra-clear LED display can be operated in four directions with a single button to rotate the display data, waveform graphs and large color fonts are easy to read, fingertip oximeter large LED display can be clearly displayed indoors and outdoors Complimentary lanyard for easy Mini Oximeter portability. ?Suitable for many scenarios - various sizes? Pulse oximeter is widely used, hiking, running, swimming, skiing, piloting, cycling and other sports enthusiasts to measure blood oxygen saturation and pulse rate easily athletic & aviation pulse oximeters. Lightweight and compact, lightweight, easy to carry,blood oxygen monitor suitable for adults and children of different finger sizes. ?Easy to Operate - Easy to Read? Rechargeable Fingertip Oximeter Full Oxygen Saturation Value Easy to read and display oxygen saturation, with ultra-clear OLED display for one-button operation.finger pulse oximeter Easy to read at night, pulse ox Spo2 sensor enables real-time display of Spo2 and PR pulse bar graphs. ?Rechargeable pulse oximeter - Accurate and Reliable Fast Reading? Rechargeable oximeter that can be recharged and recycled over and over again, eliminating the hassle of replacing batteries.The o2 pulse oximeter finger responds quickly with an 8-second readout.The oximeter fingertip is equipped with advanced sensors that accurately measure oxygen saturation, pulse rate, and blood perfusion index.