For those who would like a more detailed way to keep track of and monitor blood pressure. This Log Book/Tracker monitors blood pressure (diastolic and systolic), date/time, heart rate, medications, stress levels, food intake and weight. One page per day for 16 weeks (four months). Portable 6"x9" size. A great way to keep close track of your levels for greater awareness and to stay on top of health issues before they get out of control.