CASIO EDIFICE - Designed with motorsports in mind, the chronograph EDIFICE EFR-554D-1AV has a mechanical feel. http://products.edifice-watches.com/asia-mea/en/_detail/EFR-554D-1AV/ | Facebook
Genuine Casio O-Ring Case Seal Casio Watches AW-510, GA-100 & EF-554D 74212971 | eBay