TWO SIZE BP CUFFS FIT ALL: Ensure accurate and stable readings by using the right cuff size. Our monitor includes two cuffs - standard 9"-14"(22-36cm) and extra large cuff 13"-21"(32-52cm) - suitable for most people with different arm sizes. LARGE LCD SCREEN: Our monitor features a large 3.6-inch backlit LCD display that is easy to read and use. The display shows systolic and diastolic blood pressure, pulse rate, date, and time. TWO POWER OPTIONS: You can power the monitor with either AAA batteries (included) or USB Type-C cable (included), making it convenient to use anywhere, anytime. ONE-BUTTON OPERATION: Our monitor is designed for easy use with one-button operation, making it especially friendly for elderly people. It also includes a classification of blood pressure levels and irregular heartbeat detection to help you monitor your health status. 2 USERS & 180 MEMORIES: Our monitor stores up to 180 records with date and time stamp, making it easy for you to track your past data. It also includes a two-user mode, automatically recording the measurement results of each user.