Casio G-Shock x GA-2100 Series ft. Summer Seas Men Sports Hexagon 200m Water Resistant Watch GA-2100HDS-7A GA2100HDS GA2100 GA-2100 GA-2100HDS Embrace summer vibes with the G-Shock white and blue watch, inspired by the ocean glow! Its phosphorescent dial shimmers like bioluminescent plankton at night. Perfect for beach days or everyday wear, this stylish yet rugged watch transitions effortlessly from casual to work. Dive into adventure with timeless design! Module / Movement 5611 (quartz) Battery Life / Accuracy Approximately 3 years (+/-15 seconds per month) Crystal Mineral crystal Light Double LED light (super illuminator, selectable illumination duration, afterglow) Case / Band Material Carbon / bio-based resin case with bio-based resin band Water Resistance 200m / 20 bar Case Size Thickness: 11.8 mm Diameter: 45.4 mm Length: 48.5 mm Lug width: Integrated Other Specifications Casio G-Shock x GA-2100 Series ft. Summer Seas Shock resistant Carbon core guard structure World time (31 time zones, daylight saving on/off) 1/100-second stopwatch (up to 24 hours, elapsed time, split time) 1-second countdown timer (up to 24 hours) 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 12/24-hour format Hand shift feature (hands move out of the way to provide an unobstructed view of the digital display content) Regular timekeeping (analog-digital display)