• Swiss made high performance Ronda 515.24H quartz movement with independently adjustable 24hr/GMT function• 40mm dark grey sandblasted PVD stainless steel case • Subtle matt wave ‘amphibious assault’ graphic in the dial centre• Matte black dial with tonal grey luminous graphics. NB: Please note that the grey luminous used on this model does not perform as well as other colours. If luminous performance is important to you, the Beachmaster NIVO would be a better choice• Waterproof to 300M/1000ft; individually tested• Bi directional rotating Internal mission timing bezel with click-lock ceramic ball bearing mechanism• Internal movement shock protection system• Scratch resistant domed sapphire crystal with clear internal anti reflective coating• Custom hobnail knurled crowns at 2H and 4H• Easy change screw in strap bars with socket heads• Personal laser engraving included• Cut to fit rubber divers strap with matching double fold deployant buckle• Patent No. GB2509109