Dear friend please contact us whenever you want to know well the item for we are 24 hours business and willing to answer any questions.* Intelligent automatic compression and decompression* Easy to operate， switching button to start measuring* 60 store groups memory measurements* Can read single or all measures* Intelligent device debugging， automatic power to detect* Large-scale digital liquid crystal display screen， Easy to Read Dsplay* Fully Automatic， Clinical Accuracy， High-accuracy* Power by 2 x 1.5V AAA batteries ( NOT included )Package Included:1 X Automatic Blood Pressure Heart Beat Monitor1 X English Manual