I wanted to get this as a potty reminder watch for my almost 4 year old while he's in school. Its the very old fashioned 80's kind of watch with all sorts of button pushing combinations (buttons in each corner), and while I am very tech savvy, the ability to set or change or use this watch without all the instructions in front of you is impossible.
I had set silent alarms for every hour to buzz and remind him, he fooled with the buttons of course, and now the alarm is loudly going off every hour and the instructions are gone of course.
The biggest problem I had with the watch was that it was advertised for young children and the watchband is hopelessly large for him so it would fall off, so the whole purpose was wasted effort. Perhaps it would fit much older children