*The diaphragm  gears  springs  and linkages - the very components that make an aneroid vulnerable to shock  vibration  and over-inflation were removed - and replaced with electronic pressure sensors  IC chips and a backlit extra large  easy to read  liquid crystal digital display * Shock resistant * Easy to read in daylight as it is in a dark room * Displays deflation rate to promote more accurate measurements * It is so efficient it gets up to 1500 cycles on two  AAA  batteries * It provides two battery strength warnings - advance and urgent to ensure you never lose power at an inopportune time * It will work with virtually every major brand of blood pressure cuff on the market * It has a  systolic assist   that will alert you about 20mmHg before the onset of Korotkoff sounds * A pulse monitor that will display pulse rate once measurement is complete * It will remind you to check calibration once per year or every 10 000 cycles  whichever comes first * This instrument will turn itself off to conserve battery strength * Used with stethoscope (not included) * Lifetime calibration warranty *