My boy started wearing the el-cheapo RM5 watches from Daiso Japan- I never bothered changing the batteries, when they ran out, I'll just buy another one (it's cheaper than replacing the battery really). Then I got him a Thomas and Friends peek-a-boo watch from Japan, and he started to take a liking to watches. Now, when he goes out, he sometimes want to pick a G-Shock from some of those in my watch cabinet. Imagine a hefty G-Shock on the wrist of a 5-year old; but somehow, he likes it!