Blood pressure measurement is done by pressing a single button. Operation Place the cuff on the upper arm. Press the center button and after 35-40 seconds the screen will display your blood pressure and heart rate in large characters. The blood pressure monitor is extremely quiet both when inflating the cuff and when deflating it. Power supply The device works with 4 AAA batteries (not included). After 10-15 seconds of inactivity, it automatically turns off. The mains power supply (socket adapter) is NOT included in the package, but a cable is included. It can be connected to any mobile phone charger with a micro-USB connector. Specifications GENERAL CHARACTERISTICS Body area Arms Type of use Household Operation type Electronic Functions Portable Automatic shutdown Usage history Package contents 1 blood pressure monitor 1 x Cuff 22-32cm -Instruction manual; Color white TECHNICAL CHARACTERISTICS Maximum number of measurements 99 Connection USB Systolic measurement range 0 - 280 mmHg Diastolic measurement range 0 - 300 mmHg Food type Batteries To the network Battery type Nimh Batteries required 4 x AAA (not included) Specifications Blood pressure: 20 -280 mmHg with an accuracy of +/- 3 mmHg; Pulse: 40 - 199 bpm with an accuracy of +/- 5%; Adjustable cuff 20 – 34 cm; Memorizes 99 positions Compatible with 2 users, so a total of 198 memories so you can check your history. DIMENSIONS Cuff circumference Cuff 22-36 cm Easy Cuff Cable length 30 cm Color: White As shown in the picture