The device is easy to use and the blood pressure is determined in a short time. I am very satisfied with the device. I think it is unnecessary extra cash impersonate a Handgelenkmeßgät. Good device for good price. Unpacking, batteries (are) easy to put on short unproblematic date / time entry for the save function, and get going. The instrument stores measurements with date and time. About the storage capacity, the oldest value will be deleted automatically. The values are measured at the upper arm absolutely agree with those. A small box for storage or transportation is attending yet.