<p>A wrist sphygmomanometer (1) includes an operation unit (11; 12) operable by a user. A manometer (5) measures blood pressure. A detector (9) detects the posture of the user. A storage (10) stores an optimum posture for the user. A comparator (13) compares the posture detected by the detector (9) and the optimum posture stored beforehand in the storage (10) to generate posture information. A communication unit (6c; 7; 20) communicates the posture information to the user. A setting unit (13) sets the optimum posture in the storage (10). The storage includes a first storage section (10a), which stores a fixed optimum posture corresponding to an unspecified user, and a second storage section (10b), which stores a second optimum posture corresponding to a specified user. The setting unit (13) stores the second posture based on a value detected by the detector (9) as the second optimum posture in the second storage section (10b) in accordance with an operation of the operation unit.</p>
