【High Accuracy】: Backed by 27 years of medical device expertise. It integrates our proprietary DFFA Algorithm and an advanced SOC chip, refined through tens of thousands of clinical data acquisitions to ensure accurate measurement with a tolerance of just ±3mmHg. 【Thoughtful Design】: yuwell blood pressure machine features one button operation. It has a 3.8 inches HD display which makes readings more clearly. Self-test function and mis-operation reminder can minimize inaccurate readings caused by inappropriate use of cuff 【Comfortable Cuff】: This soft, wide-range blood pressure cuff is designed for more comfortable measurement experience. The cuff fits upper arms from 22cm to 45cm in circumference. Intelligent pressurization technology can reduces discomfort and tension caused by excessively inflation 【2x74 Memory Storage】: yuwell upper arm blood pressure monitor with the internal memory storage, enables 2 users to record and recall up to 99 sets of data each. You can also define this mode as before and after medication, morning and evening for 1 user as well, and it can show the average value of the latest 3 times measurement 【AT-HOME Monitoring】: yuwell blood pressure machine features a hypertension indicator and irregular heartbeat alert. The package includes everything you need: monitor, arm cuff, USB cable, 4x AA batteries, manual, and storage bag.