Product name:Arm electronic sphygmomanometer Display mode: LCD digital display Blood pressure:0KPa--37.3Pa(0mmHg--280mmHg) Measuring range: Heart rate:40next/min--195next/min Measurement accuracy:Static pressure:�±0.4Pa(�±3mmHg) Heart rate:Within 5% of the read value Discrimination ratei time per minute Electric source: Four 7th batteries Inflating method:Automatic inflation Quick deflation: Electronic air leakage valve Memory function: Two groups of 99 memories Automatic shutdown withoutTemperature0�°C-40â??, Automatic shutdown:operation in 30 seconds Operating environment:humidity 85% Measurement method: Oscillographic measurement method Body weight:About 430 grams (excluding batteries) Storage environment: Temperature-20C-55 ,humidity 10%-93%