Key Features 1. Small size, light weight, easy to carry 2. Simple & convenient to use, low power consumption 3. Numerical display of blood oxygen saturation 4. Pulse rate value, bar graph display 5. Pulse waveform display 6. Battery level indicator 7. Automatic 4-direction screen rotation, 6 different display modes 8. Automatic shutdown function: in the state of the measurement interface, it will automatically shut down within 5s after the tested finger is taken off Specifications 1. Display mode: 1.1-inch color OLED screen display 2. Display resolution: 96 x 64 3. Accuracy: 70%~100%: +/-2%, less than 70% is undefined 4. Pulse rate measurement range: 30bpm~250bpm (resolution is 1bpm) 5. Accuracy: +/-2bpm or +/-2%, whichever is greater 6. Power consumption: not more than 30 m A 7. Working voltage: DC 3.0V 8. Battery: 2 AAA batteries (not included) 9. Dimensions: 58 x 36 x 31 mm 10. Weight: 32 g Box Contents 1 x oximeter 1 x lanyard 1 x English user manual 1 x color box