The emblems are in order of when Luffy met the girls in One Piece, with the watch featuring Nami, Vivi, Robin, Hancock, Shirahoshi, and Rebecca.
Available to preorder in Japan on August 17, for a very limited time only, the emblems of all the ladies (+ Luffy) adorn this 21,780 yen (US$205) PREMICO watch.
He also runs a YouTube channel about Japan stuff called TheDoctorDazza, tweets at @DoctorDazza, and posts photos of his travels on Instagram.