Descriptions: Display screen: LCD digital display screen Measuring range: blood pressure 0~280mmHg, pulse 40~199 times/minute Pressurization mode: automatic pressurization by air pump Pressure reducing method: solenoid valve control pressure reducing Measurement error: blood pressure 3% heart rate 5% Memory capacity: 90 groups of measured data and time can be memorized Pressure sensing: semiconductor pressure sensor Power supply: 2 AAA batteries Measurement interval: 1mm Hg Operating temperature and humidity:+10 ~+40 /40%~85% R.H Storage temperature and humidity: - 20~+50 /15%~90% R.H Wrist band range: 135~195 mm Product features Original imported chip and converter, high measurement accuracy and long service life Intelligent simulation test process Rapid measurement of systolic blood pressure, diastolic blood pressure and pulse Clear and visible large-screen LCD digital display Automatic memory of 90 groups of measurement results Intelligent automatic shutdown function Each group of measurement results can be queried in sequence Package Includes: 1 x Wrist Type Blood Pressure Monitor Kit 1.Actual color may be slightly different from the image due to different monitor and light effect. 2.Please allow 1-3cm deviation due to manual measurement.