Casio G-Shock x GA-2100 Series ft. Retro Outlook Men Casual Sports Hexagon 200m Water Resistant Watch GA-B2100C-9A GAB2100C GAB2100 GA-B2100 GA-B2100C Experience the perfect blend of retro style and modern technology with this iconic timepiece. Featuring Smartphone Link, Tough Solar power, and a range of advanced features, this watch combines style with substance, perfect for those who demand precision and performance. Battery Life / Accuracy Tough solar (7 months without exposure to light) (+/-15 seconds per month) Crystal Mineral crystal Light Double LED light (super illuminator, selectable illumination duration, afterglow) Case & Band Material Resin / carbon case with resin band Water Resistance 200m / 20 bar Case Size Thickness: 11.9 mm Diameter: 45.4 mm Length: 48.5 mm Other Specifications Casio G-Shock x GA-2100 Series ft. Retro Outlook Shock resistant Carbon core guard structure Mobile link (wireless linking via Bluetooth) Auto time adjustment (approximately 300 world time cities) Easy watch setting (time & place) Reminder and phone finder World time (38 time zones) 1/100-second stopwatch Countdown timer 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off Power saving (display goes blank to save power when left in the dark) Battery level indicator Hand shift feature 12/24-hour format Date/month display swapping Day display (days of the week selectable in six languages) Regular timekeeping (analog-digital display)