<p><strong>Specification</strong></p> <p>Power supply: 2 x alkaline batteries (AAA)</p> <p> </p> <p>SpO2 display range: 35%~100%</p> <p>SpO2 measuring accuracy: ≤ 2% for 70%~100%</p> <p>Pulse Rate display range: 30~240bpm</p> <p>Pulse Rate measuring accuracy: ±2bpm or ±2% (whichever is greater)</p> <p> </p> <p>Over-limit indication</p> <p>SpO2: low limit value: 90%</p> <p>Pulse Rate: low limit value: 50bpm;</p> <p>high limit value: 120bpm;</p> <p> </p> <p><strong>▶Please note:</strong></p> <ol> <li>Please read the instructions carefully before using the Pulse Oximeter.</li> <li>Store the oximeter in a dry environment. A humid environment will shorten its service life and even damage the oximeter.</li> <li>Please note that this device is notfor medical use.</li> </ol>