This product looks good, works well thus far (2 days) and both my kids think the red digits on the ceiling are really cool.I ran into a minor snag during the setup: after 10 minutes of being first plugged into the wall, the time had not yet synchronized to the atomic clock. So, I had to read the manual :-(It turns out that if the "low battery" ==/== sign is flashing, and it was, the battery needs to be replaced and the time will not synchronize when that's the case. Apparently, by the time I received this unit the two installed AA batteries were dead. As soon as I replaced them - within seconds - the clock displayed the correct time.This is probably the issue that caused some other reviewers to conclude the unit was defective. The manufacturer should really ship the AA batteries separate and sealed, not installed. This is the only reason why 4 stars and not 5.Otherwise, so far so good.