From casio, this men's g-shock master of g sports watch features a black resin dial, silver-toned hands, a digital display, dual led light and mineral crystal in a 55. 4 x 53. 1 x 19. 3mm case. The carbon fiber and resin material, metal button pipes and a filter create a mud-resistant, tough-wear design. Perfect for the outdoorsman, compact sensors deliver compass, altitude, barometer and temperature measurements while step tracker, power saving and hand-shift features add convenience. With bluetoothâ® technology, this style links to your smart phone for mode customization, environment and activity data and accurate timekeeping. Equipped with world time, calendar, alarm and timer functions. The black resin strap secures with a buckle clasp. Water resistant to 200 meters, this wristwatch includes a 1-year limited warranty. We are an authorized casio dealer.