I am very disappointed in the quality of this appliance, and some of its functionality. After 3 years of mild use (maybe once per day), the control buttons have rubbed off, and the LCD display is unreadable. 
The LCD and the motherboard failure seem to be common problems with this microwave model, after reading a number of reviews on-line. The button issue - not sure what to say. It is very annoying. 

Unlike the matching oven, assembled in the USA, this microwave was Made in Shunde - China. 

Another issue which is quite annoying is that the alarm bell is so quiet, that it is practically useless. Another poor design choice.  I was expecting a lot more from a Bosch product, and thus would certainly not recommend this model to anyone. I have serious concerns about the entire brand, too.