Designed to monitor ocean conditions, this Casio G-Shock Gulfmaster chronograph men's watch has been tailored towards perfect functionality in even the most demanding environments. This impressive watch is fastened with a resin strap for excellent durability and features a 50mm stainless steel case with a blue resin bezel. Sapphire crystal protects the round face that displays a blue dial with orange accents and enhanced by dot hour markers, a barometer sensory to measure the air pressure and detect early weather trends. It also displays a depth gauge, with a pressure sensor that measures water pressure and converts it into a depth display, as well as an EL backlight to make the face glow, radio signal reception, a digital compass, tide indicator, sunrise/sunset display, world time function, 5 daily alarms, an automatic calendar and battery level indicator. Water resistant to 200m, this watch is solar powered. With shock resistant construction, this watch is protected against impact and vibration and is corrosion resistant to provide the highest quality for an incredibly powerful timepiece that's used by professionals. GWN-Q1000-1AER