My son just past 11, coded his first game when he was 9 (Snake) and then coded pac-man when he was 10. He is privileged enough to have all sorts of gadgets. But one thing he has on his wrists ALL the time is a cheap Casio watch we bought in Japan a couple of years ago. This watch has out-competed an Apple Watch and a cheap Android watch (with 4 G and dual-camera setup). Go figure!