Accurate Blood Pressure Monitor: Blood pressure monitor for home use, accurately track your blood pressure daily with 2*500 sets memory. Keep you tracking your blood pressure continuously. Adjustable Upper Arm BP Cuff Monitor: long cuff for upper arm 22-42cm/ 8.7-16.5 inch circumference. Automatically working once power on and press the start button. On the left side of monitor screen, three color line help you clearly know your health condition. Digital Blood Pressure Machine: One button operation, automatically working, all process just needs 30 seconds and one-touch on star button. Also, it very easy to carry - lightweight and fits in a convenient case so that you can take it with you anywhere, like travel or trip. Why data result different: Blood pressure monitor varies occasionally affected by many factors such as stress, measuring time, the way to wrap the cuff. It is common and you can detect it three times at the same time. Please avoid any factors that may affect reading results before use the blood pressure monitor.