its a small digital clock so not expecting much. It was a bit tiresome and fiddly to set the correct time and I still have not figured out how to get the calendar to show. After the time it took to set the correct time I did not want to mess around with the buttons in case I lost the setting again. The bit of double sided sticky velcro provided is much too weak and very small so unlikely to hold it in place on a vertical surface but I replaced that.