Arm Blood Pressure Monitor - Includes: Fully Auto Monitor, Fit-All Cuff, 4AAA & Carrying case - XXL LCD Display, Speaker, Blue Backlight, Irregular Heartbeat Detector, Memory Description: - Accurate result detected by oscillograph - Oscillometric method, automatic inflation & measurement. - Measuring Method: Korotkoff - Sound method - Heartbeat measurement.& Irregular heartbeat detection. - 2 people (180) memory recall. - 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. - Can be used for medical or home, always concerned about the health of the family or yourself, care for the elderly and children around us. Specifications: Type:Blood Pressure Monitor Power supply:4 x AAA batteries Color:Pink,blue,gray,green Application:Wrist Gender:Unisex Measurement principle: Oscillograph Cuff: Soft cuff Cuff size: 22-32cm LCD size: 63×51mm Measurement range: pressure: 30 mmHg~280 mmHg; pulse: 40~190 times/Min. Measuring Accuracy: pressure: +/-3mmHg; pulse: +/-5% of reading. Power supply by: 4 x AAA batteries. Working environment: 5 oC - 40oC (41oF to 104oF), no greater than 85% R.H. Environmental pressure: Atmosphere pressure Electric shock protection: Internal power Safety Classification:Type B device Inflation: Automatic Inflation by internal pump. Deflation: Automatic speed deflation system controlled by interanl electromagnetic piston Display: Pressure(Systolic and Diastolic), Pulse, Date, Time, User symbols, Low Power Symbol, Memory Group, Mnemonic, Heart Rate Memory: Single type 90 memories. Package included: 1 x Blood Pressure Monitor Note: 1.Please allow 1-3mm differs due to manual measurement. 2.Due to the different display and different light,the picture may not reflect the actual color of the item. Thanks for your understanding. 1.Accurate result detected by oscillograph 2.Oscillometric method, automatic inflation & measurement. 3.Measuring Method: Korotkoff - Sound method