[Clinical Accuracy and Reliability] Registered in the United States and has obtained official 510K cleared and doctor recommendation, Blood Pressure Monitor has calibrated in advance as required [Voice Broadcast & LCD Display BP Monitor] With the more humanized design, voice broadcast function, is very helpful for people with visual or other physical obstacles, or older people who need to manage their health risks. After each measurement, it will accurately report your systolic, diastolic, and heart rate values. Attention: the voice can be turned off/on (Please see the Quick Start Guide/Video guide/Q&A) [Blood Pressure Monitors for Home Use] Automatic Blood Pressure Machine can automatically record you and your whole family menbers' blood pressure values (systolic, diastolic, and heart rate) with a time stamp, it can memery 99 records for each of its two users. You can easily view your measurement history with just one click, and also review it with your doctor [Cuff Size Options Available] provide TWO Blood Pressure Cuff for you choose. One is for arms ranging from 8.7-16.5", and the other is for arms ranging from 9-20.5". The cuff included in this blood pressure machine is 8.7-16.5" in size. You can choose the style according to your needs