It's that easy: installing the batteries, the date and time, plug it air hose of the cuff to unit - and off you can go with the blood pressure measurement. The measurement process is pleasant! One need only to press the start button. The unit pumps the (very easy to be applied and to be fixed) boot quickly on (only slightly higher than the measurement point!) And let the pressure drop again immediately. Therefore there is no unpleasant stasis of blood and no excessive pressure on the upper arm - as in many other devices. The measurement results are saved so comparisons with previous measurements on the device are possible. (It can be gesüeichert data of 2 users by means.) The display and the numbers are large and contrast - so very easy to read (even for older people who do not look as good). The design is clean and pleasant, the device looks solid and high quality. I do not know what you there still could do better.
Round highly recommended!
PS .: It is to connect a network device that you would have to buy extra. In my view it is unnecessary because the device with batteries / accumulators (4x AA) works just fine - and you're much more mobile in the choice of the measurement place without mains connection.
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Addendum: I just read in the offer of spare cuff that Medisana cuffs are apparently leaking fast. I do not hope that this is the reason for the low price of the device: that you do later on "disposable cuffs" big money. In comment reassured "Heinz Peter" in this regard: "No Angst.Ich use this device for many years.The cuff is still tight."
Supplement January 2015: Everything still works properly.