The G-Shock GA2100RL-1A features a sleek, minimalist design with a black case, black dial, and black strap, offering a modern and understated aesthetic. Its octagonal bezel enhances the watch's contemporary look while maintaining G-SHOCK's renowned durability with shock resistance. The watch is equipped with double LED lighting: one for the face and another for the digital display, both with Super Illuminator and selectable illumination durations (1.5 or 3 seconds) for clear visibility, even in low light. The hand shift feature moves the analog hands out of the way, providing an unobstructed view of the digital display. This model includes world time across 31 time zones, covering 48 cities plus coordinated universal time, with daylight saving on/off. It also offers a 1/100-second stopwatch, countdown timer, 5 daily alarms, hourly time signal, and a full auto-calendar that extends to 2099. Regular timekeeping is displayed with analog hands (hour and minute, with the minute hand moving every 20 seconds) and a digital readout for hour, minute, second, pm, month, and date. The GA2100RL-1A has an accuracy of ±15 seconds per month and an impressive 3-year battery life on two SR726W batteries. - Module No. 5611 - Shock resistant (G-SHOCK) - Double LED light: LED 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/off - 1/100-second Stopwatch - Countdown Timer - 5 Daily Alarms - Hourly time signal - Full auto-calendar (to year 2099) - 12/24-hour format - Button operation tone on/off - Regular timekeeping *Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) *Digital: Hour, minute, second, pm, month, date - Accuracy: ±15 seconds per month - Approx. battery life: 3 years on SR726W × 2