CH-S603 Tunnel electronic Upper arm Blood Pressure Monitor. Pressure:0mmHg~295mmHg(0.0kPa~39.33kPa),Pulse rate:(40~199)beats/min. Relative humidity: 15%~80%RH. Relative humidity:≤93%RH. Take the arm rest out of the box and insert it in the direction shown card slot, install the arm bracket.
