I've bought this product for my 10 years old sister. The necklace is ok, but the watch doesn't work. I've tried to change the date and time, but I couldn't. It should be easy to press the menu button, but your wrong. I've use differnet things, including hard screwdrivers, but it didn't work. Because it was useless, I've open the watch with force and try to change the time and date, I COULDN'T. Unfortunatelly it's a bag of pieces in my bin at the moment as I've tried every way to change the time and date. I don't think kids should use this as watch, more like, hand necklase.