Features:- Accurate result detected by oscillograph- Oscillometric method， automatic inflation & measurement.- Heartbeat measurement.& Irregular heartbeat detection.- 2 people (180) memory recall.- KPa/mmHg Unit exchange.- Fuzzy logic & large LCD display.- WHO Classification Indicator.- Average of the 3 most recent measurements- PMMA faceplate (acrylic glass)- Automatically turns off(within 1 minute) to save power. Specification:- Measurement principle: Oscillography- Cuff: Soft cuff- Cuff size: 22-32cm-Unit size: 130��100��50mm-LCD size: 63��51mm - Measurement range: pressure: 30mmHg~280mmHg; pulse: 40~190 times/Min.- Measuring Accuracy: pressure: +/-3mmHg; pulse: +/-5% of reading.- Power supply by: 4 x AAA batteries. - Working environment: 5oC - 40oC (41oF to 104oF)， no greater than 85% R.H.- Environmental pressure: Atmosphere pressure- Electric shock protection: Internal power unit - Safety Classification:Type B Equipment- Inflation: Automatic Inflation by internal pump.- Deflation: Automatic speed deflation system controlled by interanl electromagnetic valve- Display: Pressure(Systolic and Diastolic)，Pulse，Date，Time- Memory: Single type 90 memories.