2 PCS ZM-700-02 TFT Fingertip Oximeter Blood Oxygen Saturation Detector,Ramdom Color Delivery

Features:1. Lightweight and easy to carry2. Manually adjust the interface direction3. IPS color screen display, display test value and bar graph at the same time4. Auto Standby5. The oximeter needs 2 AAA batteries for power supply (batteries not included)Specifications:1. Accuracy: +/-2% at the stage of 70%-100%, not specified (less than or equal to 70%)2. Resolution: +/-1%3. Measuring range: 25BPM-250BPM4. PR accuracy: +/-1BPM or +/-1%5. Working temperature: 5-40 degrees Celsius6. Storage temperature: -10-40 degrees Celsius7. Working humidity: 15%-80%8. Storage humidity: 10%-80%9. Dimensions: 38 x 35 x 66 mm10. Net weight: 27.5 grams