special design for pregnacy&diabetic 5.5-inch large backlight screen weekly BP trend - This blood pressure monitor supports switching between 2 users. Each user can store 250 historical measurement records, which is convenient for you to track the blood pressure changes of yourself and your family. large size arm cuff up to 45cm whole-process voice broadcast - The voice broadcast function makes the operation easier and more convenient, and brings you a comfortable and pleasant product experience.