Casio G-Shock Digital / Analogue Black GA-100B-4AER Watch. Introducing a collection of new G-SHOCK models whose 35mm diameter faces and large cases give them a look of power and strength. Dial rings and raised hour markers also create three-dimensional depth that gives the face plenty of character. These watches are designed and engineered to deliver outstanding shock resistance, are 200m water resistant, and anti-magnetic. The GA-100B-4AER is beautifully finished in red with white accents, a reverse LCD display and a red 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. Features include: Auto LED light Shock-resistant Magnetic resistant World time function Stopwatch function - 1/1000 sec. - 100 hours Timer - 1/1 min. - 24 hours (with automatic repeat) 5 daily alarms Snooze feature Average Speed display Automatic calendar with Date, Day and Month 12/24-hour timekeeping Mineral glass Resin case & band 2 Years - 1 Battery Water resistance classification (20 bar) Perfect for free diving without scuba gear: the watch is water resistant up to 20 bar according to ISO 22810. Dimensions (H x W x D) 55,0mm x 51,2mm x 16,9mm This watch comes with a G-Shock authenticity certificate.