Rossmax CH91 Semi-Automatic Blood Pressure Monitor allows the user to take control of the inflation of the cuff. This manual-inflate blood pressure monitor offers accurate blood pressure and pulse measurements quickly and easily. Simply inflate the cuff to the desired pressure. The cuff will automatically deflate and show your readings on the easy to read display. Blood pressure measurements determined with CH91 are 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. This unit is 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 of an irregular heartbeat during the measurement. Note: It is strongly recommended that you consult your physician if the IHB icon appears often. Rossmax has the comprehensive product range in the field of fever management and monitors health conditions on a professional and most accurate level. Rossmax - your total healthstyle provider for monitoring and treating world's major chronic diseases!.