Before your order, please note that: There are 4 versions to choose: 1 - With Intelligent Voice Function+22-32cm Cuff 2 - With Intelligent Voice Function+22-42cm Cuff 3 - Without Intelligent Voice Function+22-32cm Cuff 4 - Without Intelligent Voice Function+22-42cm Cuff 1. JZ-256AUpper Arm Blood Pressure Monitor with Large Cuff/2-Users Mode/3-Color Backlight Indicator/Intelligent Voice Function/LCD Display Screen AutomaticBP Monitor/BP Cuff/Smart Blood Pressure Deviceto Detect Irregular Heartbeat 2. Features: LegibleLCD digital display, 3-color backlight indicatorand intelligent voice functionare convenient for elderly peopleuse Easy to use, fully automatic, assume proper sitting position, wrap the cuff around your upper arm, just click the button can get your Systolic/Diastolic blood pressure and pulse result Two users have their own independent measurement records, each user can record up to 99 measurements The BP cuff fits standard and large adult arms providing the most accurate and comfortable during the measurement process Auto-off after no operation in 1minute When the air pressure exceeds 295mmHg-20ms, it will automatically and quickly exhaust for safe and reliable use Two power supply methodsthat can be powered by 4*AAA battery/USB cable(Not included) 3. Specifications: Item name: Upper Arm Blood Pressure Monitor Display: LCD digital display Measuring method: Pulse Scanning/Oscillography Intelligent Voice Function: Optional(Please choose the correct version before your order) Cuff length: 22-32cm/22-42cm(Optional) Measuring range: Blood pressure: 0mmHg ~ 280mmHg (0~37.3kPa) Heart rate: 40 times/min~195 times/min Accuracy: Blood pressure:3mmHg (0.4kPa) Heart rate:5% Battery: 4*AAA(Not included) Material: PC+ABS Product size/weight: 125*113*55mm/216g Package size/weight: 170*105*116mm/398g 4.Note: The actual use may be slightly different depending on the specific situation Item color displayed in photos may be showing slightly different on your computer monitor since monitors are not calibrated same. 5. Package List: 1*Upper Arm Blood Pressure Monitor 1*Cuff 1*Storage Bag 1*English User Manual 1*USB Cable