This is an A5-sized planner, larger than a postcard! It's very easy to see and write in! It's useful for managing things at home. Recently, many planners are the same size as a medical record book, so this is recommended for those looking for a larger size. Twice a day, morning and evening, measure your blood pressure and record the systolic and diastolic blood pressure on the ruled lines with ● marks to create a line graph. You can record two weeks' worth of data on a two-page spread. With 24 pages, you can record about a year's worth of data, so 10 books can be used for 10 years. Size: 21cm (height) x 14.8cm (width), A5 size ★ Although unused, it has been stored in a drawer, so it may not be in perfect condition, and there may be oversights during inspection. If you are concerned or are looking for a perfect product, please refrain from purchasing to prevent trouble due to differences in our values. ★ The color may be slightly different from the actual product due to lighting and the shooting environment. Please understand this in advance. ★ We cannot accept returns except in cases of obvious fault on our part, so please consider carefully before making a purchase.