Immerse yourself in the feel of mysterious, smoky light with the G-SHOCK GA2100K-5A, a watch inspired by the rhythm of music-driven nightlife and the shadowy energy of nightclubs and festivals. Warm earth-tone hues are paired with subtle neon accents that shimmer like laser strobes, while translucent matte finishes on the bezel and band recall the hazy atmosphere of a fog-filled dance floor. The streamlined GA-2100 design features a carbon and resin case measuring 48.5 × 45.4 × 11.8 mm and weighs just 51 g. Built with G-SHOCK’s Carbon Core Guard structure, it delivers outstanding shock resistance alongside 200-metre water resistance, mineral glass, and Neobrite luminous coating for reliable performance day or night. Packed with functionality, the GA2100K-5A offers world time across 31 time zones, a 1/100-second stopwatch, countdown timer, five daily alarms, and a full auto-calendar up to 2099. Double white LED illumination ensures clear visibility, while the hand-shift feature keeps the digital display unobstructed. Powered by dual SR726W batteries, it provides approximately three years of battery life with an accuracy of ±15 seconds per month. A bold new take on the iconic GA-2100 — cutting-edge style infused with legendary G-SHOCK toughness. - Case size: 48.5 × 45.4 × 11.8 mm - Weight: 51 g - Carbon/resin case & bezel - Resin band (145–215 mm) - Shock resistant with Carbon Core Guard structure - 200 Meters Water Resistant - Mineral glass - Neobrite luminous coating - Approx. 3-year battery life (SR726W × 2) - World time: 31 time zones(48 cities + UTC), DST on/off - 1/100-sec stopwatch (up to 24 hrs, split & 1st–2nd place timing) - Countdown timer (1 sec increments, up to 24 hrs) - 5 daily alarms + hourly time signal - Double LED light (white, 1.5 or 3 sec, afterglow) - Full auto-calendar (to 2099) - Accuracy: ±15 seconds per month - 12/24-hour format - Button tone on/off - Hand shift feature for clear digital view - Analog: hour, minute, day dial - Digital: hour, minute, second, PM, month, date