New product guaranteed, quality workmanship, and exclusive offers! Buy now and we'll deliver your item as soon as possible. Have a great day! Blood pressure measurement is done with a single button press. Usage: Place the cuff on your upper arm. Press the middle button, and after 35-40 seconds, the screen will display a large reading of your blood pressure and pulse. The blood pressure monitor is extremely quiet during both cuff inflation and deflation. Power Supply: The unit operates on 4 AAA batteries (not included). It automatically turns off after 10-15 seconds of inactivity. The power supply (wall adapter) is NOT included, but the 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 Operating Type: Electronic Function: Portable, Automatic Shutdown, Usage History Package Contents: 1 Blood Pressure Monitor, 1 x Cuff 22-32cm, User Manual; Color: White TECHNICAL CHARACTERISTICS Maximum Number of Measurements: 99 Connectivity: USB Systolic Measurement Range: 0 - 280 mmHg Diastolic Measurement Range: 0 - 300 mmHg Power Type: Batteries, AC Power 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; Remembers 99 positions for 2 users for a total of 198 memories so you can check your history. MEASUREMENTS Cuff Circumference: Cuff 22-36 cm, Single Cuff Cable Length: 30 cm Color: White (As shown in the picture)