This beautiful watch is a toy, important to remember. It is not wise to actually learn the hour. This is a toy the child is wearing the wrist. The closure system is dailleurs thought that even a 4 year old child can take care of himself. The screen is touch. There are games, administer care the kitten will be regularly seek food, a toilet, a game ... It can be used as a timer (hourglass), or as shown. This toy is extremely simple to use and ergonomics. My daughter had a kidipet (of the same brand) at Christmas and it survives the many falls, so this kind of product is very solid. The battery is included and installed.