Want a Blood Pressure Monitor that is easy to put on and easy to use? The Lumiscope 1143 is a wrist monitor that is fully automatic! Just slip this in your wrist and press the button - it will do the rest! The three-digit readout is on an easy-to-read LCD screen! It will show your diastolic, systolic and heart rate readings all at once! The memory on board will hold 85 readings, to help trace your trends for your Doctor. 2 AAA batteries will power the monitor for up to 250 readings! Take this portable monitor with you everywhere, for quick readings at work, exercising or vacations! It will handle readings wherever you are! Always know your numbers! Cuff Type: Wrist Operation Mode: Automatic Features: Fully-Automatic Low or High BP Monitor Low Battery Indicator Auto shut-off: 2.5 minutes after last key operation. Inflation: micro rolling pump. Pressure exhaust: solenoid valve. Memory: 85 memories Measurement Method: Oscillometric method Measurement Range: Pressure 20 - 300 mmHg Pulse: 40 - 200 beats/min Measurement Accuracy: Pressure +- 3mmHg, pulse +-5% Pulse: within +-5% of reading Power Source: 2 AAA Alkaline batteries