Rossmax AC701K Automatic Blood Pressure Monitor provides measurements equivalent to those obtained by a trained observer using cuff/stethoscope auscultation method, within the limits prescribed by the American National Standard, Electronic or Automated Sphygmomanometers. With a proprietary microphone built into the arm cuff, the innovative DK Technology actually listens like your doctor when taking a reading. The Exclusive DK Technology delivers ABSOLUTE Accuracy by using the advanced dual sensor cuff system that senses both pressure and sound. Digital Korotkoff Sound (DK) Technology is a combination of the Oscillometric Method and Korotkoff Sound Method. Supported with an advanced dual-sensor cuff system (built-in pressure sensor plus sound sensor), the Rossmax DK Technology offers accurate analysis to the oscillation and K-sound, which perfectly integrates the convenience of Oscillometric Method and the expertise of the clinically trusted Korotkoff Sound Method. This unit is equipped with innovative blood pressure risk indicator, which visually indicates the assumed risk level (normal/prehypertension/stage 1 hypertension/stage 2 hypertension) of the result after each measurement. This unit is also equipped with an Irregular Heartbeat (IHB) Detection which allows those who have an irregular heartbeat to obtain accurate measurements alerting the user of the presence IHB.