1. Display: OLED display
2. SpO2: Display: 0%-99%; Measurement range:70%-100%;
Accuracy: 70%-100%±2%;0%-69% no definition; Resolution:1%
3. Pulse rate: Display range:0-240bpm;Measurement range:30-240bpm
Accuracy:30-100bmp,2bmp; 100-240bmp,±2%; Resolution: 1bpm
4. Power supply: 2×1.5v AAA batteries
5. Ingress Protection Rating: IP22
6. Classification: Internal powered equipment type BF
7. Bluetooth communication: 2.4GHz(2400-2483.5MHz) frequency range ; GFSK modulation.