Portable Digital Arm Measure Blood Pressure Monitor Upper Arm BP Machine Product Information High Accuracy: Through ten thousands of clinical data collected from hypertension patients, the algorithm of bp monitor can match various people with better adaptability and thus offers high accurate measurement result Comfortable Cuff: This soft, wide-range blood pressure cuff is designed for more comfortable measurement experience.Intelligent pressurization technology can reduces discomfort and tension caused by excessively inflation. Self-test function and mis-operation reminder can minimize inaccurate readings caused by inappropriate use of cuff 99 Memory Storage: The upper arm blood pressure monitor with the internal memory storage, it can display 99 records, this is very convenient for you to keep track of your blood pressure and health, and it can show the average value of the latest 3 times measurement which makes your readings more accurate Thoughtful Design: The blood pressure monitor large cuff can capture any body movement during the test and remind you correct tesing posture. The design with hypertension indicator and irregular heartbeat alert for fitness tracker is perfect for home use. Power Supply ModeRemovable Battery MaterialABS Product nameArm Blood Pressure Monitor Measurement methodOscillometric Measurement Method DisplayLarge LCD Display Screen Accuracy3mmHg Power supply4*AAA Battery This Listing includes : 1 x Host(not include batteries) 1 x Arm cuff 1 x Manual 1 x Storage bag Note: Due to different personal measurement methods, there will be an error of 2-4 cm, please understand Thanks for your support