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. <ul><li>Case/bezel material: Carbon / Bio-based Resin</li><li>White Bio-based Resin Band</li><li>Mineral Glass</li><li>Shock Resistant</li><li>Carbon Core Guard Structure</li><li>200-meter water resistance</li><li>Double LED light</li><li>LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)</li><li>LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)</li><li>World time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off</li><li>1/100-second stopwatch</li><li>Countdown timer</li><li>5 daily alarms</li><li>Hourly time signal</li><li>Hand shift feature</li><li>Full auto-calendar (to year 2099)</li><li>12/24-hour format</li><li>Button operation tone on/off</li><li>Regular timekeeping</li><li>Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)</li><li>Digital: Hour, minute, second, pm, month, date</li><li>Accuracy: ±15 seconds per month</li><li>Approx. battery life: 3 years on SR726W × 2</li><li>Size of case : 48.5×45.4×11.8mm</li><li>Casio G-Shock Style #: GA2100-7A7</li></ul>