Features: Practical Upper Arm Blood Pressure Monitor: intelligent automatic one-button blood pressure(systolic pressure, diastolic pressure) and pulse rate measurement. Easy to Use: wrap the cuff around the upper arm, then press the Start/Stop button to start the measuring. Compact and Portable BP Cuff: one-piece portable designed blood pressure tester is convenient for monitoring your blood pressure anytime anywhere. Dual User Mode & Data Memory: the blood pressure monitor support 2 users mode, each mode can store 99 groups of measured data. After each measurement, the test result will automatically stored. Automatic Shutdown Function: the portable BP cuff machine is powered by 4pcs 1.5V AAA batteries(NOT included), and will automatic shutdown in 3 minutes when there is no operation. Wide Cuff Range: larger size for upper arm circumference from 8.66" to 16.54" use, main unit and cuff one-piece designed, easy to use. 3.2-inch LCD Display with Blue Backlight: clearly display year/month/date/time, systolic blood pressure, diastolic blood pressure, pulse rate, and other icons. Specifications: Type: Without BT Function / With BT Function (Optional) Material: ABS Display: LCD digital display Measuring Principle: Oscillometric method Measuring Localization: Upper arm Measuring Range: Pressure: 0~299mmHg, Pulse: 40~199 pulses/min Accuracy: Pressure: 3mmHg, pulse: 5 of reading Memory: 2 * 90 sets memory Auto-off: In 3 minutes Operating Environment: -5~40, 15~93%RH, 86~106kPa Storage Environment: -20~55, 10~93%RH Power Supply: 4 * 1.5V AAA battery (NOT included) Cuff Range: 22~42cm / 8.66~16.54in Main Unit Size: 137 * 76.5 * 23mm / 5.39 * 3.01 * 0.91in Item Weight: 264g / 9.33oz Package Weight: 329g / 11.62oz Package Size: 16 * 9.8 * 6.5cm / 6.30 * 3.86 * 2.56in Packing List: 1 * Blood Pressure Monitor 1 * Manual (English)