A selling point for me was the Bluetooth function to synchronize the value determined with a smartphone and thus avoid the annoying logging of values. "Should" because it works absolutely NOT! The Bluetooth-contact is not made. Acquiring the account (- about its necessity anyway you can already arguing) with Medisana is a disgrace and the smartphone app is not the account you just created!
MIRACLE maligned! What just thinks you this is the customer to sell a non-functioning feature? For the 2 star deduction!
It would be quite sufficient if the transmission of values via Bluetooth or even better would take place via wireless directly to your smartphone.