Large Cuff for Flexible Use Designed to accommodate arm sizes ranging from 8.66 to 12.60 inches (22cm to 32cm), this monitor ensures a snug and reliable fit for a comfortable and precise measurement experience. Its user-focused design prioritizes accuracy and ease of use.Dual Power Options Conveniently power the device using either 4 AAA batteries or the included USB cord. Please note that these power sources cannot be used simultaneously, allowing for safe and flexible operation.Dual User Memory Storage Ideal for shared use, this monitor supports two user profiles (A/B mode), allowing separate tracking for two individuals. Each user can store up to 99 measurements for effective and organized monitoring over time.Whats Included The package contains 1 upper arm monitor, 1 large adjustable cuff and 1 user manual. This comprehensive kit is perfect for those seeking a convenient way to track their health at home.Simple Operation with Clear Display Featuring one-touch functionality, this device is intuitive and straightforward. The large, backlit LCD screen provides clear and quick readings, making it easy for users of all ages to understand their results.