Electronic Wrist Blood Pressure Monitor DRM-BPM60CH, Dr. Mayer Properties:. Intended for use by adults at home or in medical facilities, for measuring blood pressure and heart rate at the level of the wrist. Measurements equivalent to those obtained by a specialized medical staff, using the cuff method/auscultation with the stethoscope, within the limits established by the National Institute for Standardization in the USA, for manual, electronic or automatic sphygmomanometers. Display: Digital LCD. Measuring principle: Oscillometric method. Place of measurement: Wrist. Memory function: memory 2x90 sets of measured values. Power source: 2 AAA 3V alkaline batteries (not included). Automatic shutdown in 3 minutes. Main unit weight: Approx. 122g (without batteries). Main unit size: - L 78mm - L 65mm - I 65mm. Main unit operating life: 10,000 times, under normal conditions of use. Battery life: Can be used 300 times under normal conditions. Contains instruction manual and storage box Storage:. It is recommended to avoid impact and exposure to direct sunlight or rain during transport.