Casio are a leading manufacturers of watches and Casio Japan from time to time release limited editions watches of some of their popular brand, ie Casio Frogman, Casio G-Shock. Most of these watches are only released in Japan and are generally not available in other countries. A UK leading supplier of Casio watches www.sporttek.co.uk regularly have available in limited numbers some of these limited editions watches. So if you want something different and something you will probably never see been worn by anyone else, try these guys.