1. Double 99 memory group: For 2 peoples
2. Measure range: Pressure :0-299mmHg(0-39.9kPa) Pulse rate :40-180times/min.
3. Accuracy: Pressure:±3mmHg (within±4kPa). Pulse rate:accuracy is ±5%
4. Display : Digital liquid crystal display
5. Auto power off:Auto power off when no operation for 1 minute
6. Battery: Four alkaline batteries
7. Battery lifespan: 300 times under the condition of 7 alkaline battery with 23℃.
8. Operating temperatures: 5.0 to 40.0°C, ≤85% RH
9. Storage temperatures: -20.0 to 60.0°C , ≤95% RH
10. Dimensions:100×100×130mm(not include Wristbands)