Major information:Large LCD screen， low power consumption.WHO blood pressure classification.Voltage power detection.Auto power off when no operation for 1 minute.Fashionable outward， light and compact， easy to carry， suitable for health care.100% brand new and high quality. Display: LCD screenPower source: 2 x AAA alkaline batteries(not include)Measuring range: (20-280mmHg/ (2.7-37) kPa (BP)，(40-200) / minute (pulse number)Accuracy: ��3mmHg/ ��0.4kPa (BP) /��5% (pulse number)Inflatable way: automatic InflatableLeak device: vent valveQuick leakage: electronic gas valveThe results display: high / low voltage / pulseUnit conversion: blood pressure value conversion unit mmHg/Kpa (boot default in mmHg)Memory group number: double the 99 sets of memoryWHO tip: Blood pressure warning strip tips blood pressureThe overpressure protection function: the pressure more than 295mmHg (20MS) automatic quick exhaustA) environment temperature: 10 �� ~40 ��B)Relative humidity:�� 85%C) atmospheric pressure: 85kPa ~ 105kPa;D)Storage temperature: - 20 �� to 50 ��Color: White， blue Package includes: 1 x tonometer