I use the blood pressure monitor now for 2 months. The handling and the results are very good. Since the device with Bluetooth 4.0 and a fairly new app works I had to buy a new phone so the app is run. This is not a disadvantage was only one good reason to dispense the old cell phone part. The connection to the mobile phone works without problems. Only the app is not set up so completely logical but serviceable. The online database is great, especially in conjunction with other health appliances (eg scales). It is a pity that the device has no display and you always need the phone. That's not so bad, but given the high price that other manufacturers can now better. The Händling the upper arm cuff is of course not quite as simple as with a wrist knife but that should be clear and free from deduction. The measurement results are sufficiently accurate and the auto measurement function really super. Here, the device automatically measures 3x in succession and calculates an average. So I get the best results. The battery life I can not judge, however, if they should, as announced by the manufacturer to work for 1 year would be a good value. It would be nice if a transport bag would be accompanied. The housing is made of aluminum and by the way not a cheap plastic. The quality and feel of the product are beyond reproach.