Welcome to Tone-on-Tone G-SHOCK — watches devoted to the monochrome aesthetic, down to the finest detail. The GA2100 clothes its iconic form in tone-on-tone style, available in three popular colors — turquoise, white, and volt yellow. The case, bezel, band, and even the individual dial components are finished in subtly different shades of the same color for a monochromatic look that boasts surprising depth and dimension. These colorful watches make a great accessory for your street-savviest fashion. Case/bezel material: Carbon / Bio-based ResinWhite Bio-based Resin BandMineral GlassShock ResistantCarbon Core Guard Structure200-meter water resistanceDouble LED lightLED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)World time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off1/100-second stopwatchCountdown timer5 daily alarmsHourly time signalHand shift featureFull auto-calendar (to year 2099)12/24-hour formatButton operation tone on/offRegular timekeepingAnalog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)Digital: Hour, minute, second, pm, month, dateAccuracy: ±15 seconds per monthApprox. battery life: 3 years on SR726W × 2Size of case : 48.5×45.4×11.8mmCasio G-Shock Style #: GA2100-7A7