The Freely A1 Automatic Blood Pressure Monitor is a wrist-mounted blood pressure monitor used to measure blood pressure and pulse rate. The device can be used in hospitals, families, schools, and medical centers. It is suitable for adults, not newborns. 1) Measurement: Oscillographic measurement; 2) Results display: high pressure/low pressure/pulse; 3) Unit Conversion: blood pressure units kPa / mmH conversion (default boot unit is mmHg); 4) Memory Group: two memory settings, each holding 99 measurement results; 5) Clock function: Sets year, month, day, hour, minute; 6) Low power test: Any operating condition detecting low power will display a low power request on the LCD screen; 7) Blood pressure classification display: blood pressure classification shows blood pressure health; 8) Overpressure protection function: pressure above 295 mmHg (20ms) is automatically and quickly relieved; 9) Automatic shutdown function: if no operation is performed for 2 minutes, it will automatically shut off. This product Please read the instruction manual carefully before use and use it properly. Please keep the instruction manual safe for future reference. It operates with 4 AA batteries. Dimensions: 130.9x96.1x63.4 mm Weight: 238g