Introducing the new G-SHOCK GA-100-1A4ER. The 35mm diameter face and large case give it a look of power and strength. Dial rings and raised hour markers also create three-dimensional depth that gives the face plenty of character. This watch is designed and engineered to deliver outstanding shock resistance, it is 200m water resistant, and anti-magnetic. The GA-100-1A4ER is beautifully finished in black with red accents and a black resin strap for a distinctive look. Over-sized buttons come with a checkered anti-slip surface to make operations fast and sure. 1/1000-second stopwatch, velocity indicator, World Time, 5 alarms and much more provides these models with unmatched function and performance.