Full set:1*operating manual （1.Russian voice：Russian operating manual 2. No voice and English voice：English operating manual ） 1*Electronic blood pressure monitor1*Wrapping paper box Set speaker sound:Press the Set button, it will show "SP ON" on screen,it means the spearker sound is switched on.Press the Set button, the display will be changed to"SP OFF". It means the speaker sound is switched off. Technical parameters:1. Display mode: liquid crystal display screen2. Measuring mode:depressurization type oscillometric method for measurement3. Power supply: tow AAA alkaline batteries (3V)4. Measurement range:(20-280)mmHg/(2.7-3.7) kPa (blood pressure) ,(40-160) times/min (pulse rate)5. Accuracy:±3mmHg/±0.4kPa (blood pressure) ±5%（pulse rate)6. Air charging mode: automatic charging7. Air leakage device: air relief valve8. Quick air leakage : electronic air release valve9. Result display:high pressure/low pressure/pulse10.Unit conversion :conversion of blood pressure value unit mm Hg/KPa (default unit when start is mmHg)11.Number of memory groups:Double 99 memory groups.12.Low battery inspection:LCD displays symbol "battery” to indicate low battery13.WHO tip:blood pressure warning strip is used to indicate blood pressure and health status14.Arrhythmia tip:LCD displays "♥” flickering to indicate arrhythmia15.Overpressure protective function :automatically releases air when air pressure exceeds 295mmHg(20MS)16.Automatic shutdown function :automatic shutdown in one minute when there is no operation17.Current:dynamic current less than 500mA , statistic current less than 30 mA , shutdown current less than 20uA18.Normal working conditions: a) Environment temperature:5-40 degrees Celsius b)Relative humidity:less than or equal to 85% c)Atmospheric pressure: 85kPa ~ 105kPa