✓For an Accurate Measurement Reading, please follow the instructions on the product description or owner's manual. Improper operation may cause large errors. ?With large adjustable wrist cuff 5.3-8.5 inch, this blood pressure monitor is suitable for most of adults. Fully Automatic Wristband BP Machine is convenient to take measurements by yourself!. ?Package Include — Wrist Blood Pressure Monitor White * 1, Owner's Manual* 1, Portable Device Case* 1, AAA Batteries* 2. Please take a measurement at the same time every day, so that the data can be compared in a valuable way. ?With lightweight and portable feature, monitoring your blood pressure and heartbeat anytime, anywhere. Battery powered, easy to carry, suitable for travel, business trip and home use. ?2-User Mode, 120 Reading Memories — This Large Display blood pressure monitor can store 2 users' reading memories, 60 sets for each user, with date & time stamp. It's great for monitoring your blood pressure and pulse rate over a period of time. ?Clinically Accurate & High-Quality — Sejoy DBP-2253 Wrist Blood Pressure Monitor has been clinically tested and verified to ensure accurate measurements. High-quality materials provide the strength and durability of the home use blood-pressure monitor.