As the Gro-clock work, has already been sufficiently explained. If you set it once, it is also clear and for each additional time the description is no longer needed. I take this clock with on every trip with an overnight stay. On the one hand I want to sleep on vacation longer ;-) and on the other hand, the children have become so used to their clock that they've the piece familiarity ensures that they sleep well in unfamiliar surroundings. The Gro-Glock with their lighting yes at the same time a nightlight. Too bad for us that we have discovered this clock so late. We could have no less than already 2 years longer sleep better: -D A small disadvantage ... In the German version (plug, description) is the specified digital time in the English style, ie only 1-12 and AM and PM provided. That do not understand even elementary school students. But since it's all about anyway, the morning get-up in children at this age and this indeed numerically correct, I give it no star deduction.
With the built-in alarm function has so well like the first alarm. We have the clock since the 5th year of the child in the use and now in elementary school and I wanted to have an acoustic signal to get up.
The design is to be child-friendly without childlike, so that the clock work long. For younger children from 2- 3 years I would take a different clock that is childlike in design, such as the Kid Sleep.