Folding Travel Clock Thickness when stored is about 2.5 cm. I received this as a promotional item a long time ago. I kept it without using it, but I was able to confirm that it works by inserting batteries before listing it. However, please understand that this is a used item that has been stored at home for a long time, and consider purchasing it. It will be shipped in simple packaging. #AlarmClock #TravelClock #Clock #Travel