From G-Shock, simplify your life with the popular analog-digital combination GMAS2100 in your choice of smoky, monochromatic colors. The same tough construction of the original GA2100, but in an even slimmer, more compact design. The flat watch face and simple bar indexes project a minimalist look and feel that shows you know right where you’re going. A casual, comfortable G-SHOCK in stylish solid colors.Case size (L× W× H): 46.2 × 42.9 × 11.2mmWeight: 41gCase and bezel material: Carbon / ResinResin BandShock ResistantCarbon Core Guard structure200-meter water resistancePower supply and battery life: Approx. battery life: 3 years on SR726W X 2Mineral GlassWorld time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off1/100-second stopwatchCountdown timer5 daily alarmsHourly time signalDouble LED lightFull auto-calendar (to year 2099)12/24-hour formatHand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)Casio G-Shock Style #: GMAS2100BA4A