I've had this unit now for over a year or so. It works fairly well. The only thing that is bad about it is setting it up when installing new batteries, etc.. The controls are very confusing (both the buttons on the front and the three buttons in the back). The instruction manual is not very coherent and is written badly. Also, there is no convenient way to grip the unit when moving it or picking it up. The way the buttons are on the front and back, it is very easy to inadvertently press one of the buttons and screw everything up. I did have a problem off and on with the time not displaying correctly. It will be correct for several weeks then it will be wrong. When I manually reset the time, it will eventually be incorrect again. Not a reliable clock!