Casio Edifice x ECB-40 Series ft. Sospensione Motorsports aka MUGEN (Limited Edition) Men Formal Round 100m Water Resistant Watch ECB-40MU-1A ECB40MU ECB40 ECB-40 ECB-40MU Experience the thrill of motorsports with this high-performance watch collaboration between Edifice and MUGEN, featuring a unique carbon fiber-reinforced resin case, Alcantara band, and Smartphone Link technology for precise timekeeping and advanced functionality. Module / Movement 5708 (quartz) Battery Life / Accuracy Approximately 2 years (+/-15 seconds per month without mobile link function) Crystal Sapphire crystal Light Double LED light (auto LED light, super illuminator, selectable illumination duration, afterglow) Case / Band Material Carbon / stainless steel case with fabric (Alcantara) band Water Resistance 100m / 10 bar Case Size Thickness: 12.7 mm Diameter: 48.0 mm Length: 52.4 mm Lug width: Integrated Other Specifications Casio Edifice x ECB-40 Series ft. Sospensione Motorsports aka MUGEN (Limited Edition) World time (38 time zones, city name display. daylight saving on/off, auto summer time switching, home/world time city swapping) 1/1000-second stopwatch (up to 24 hours, elapsed time, lap 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 Date/month display swapping Day display (days of the week selectable in six languages) Hand shift feature (hands move out of the way to provide an unobstructed view of digital display contents) Flight mode Schedule beeper on/off Regular timekeeping (analog-digital display) Smartphone Link / App Connectivity Features Mobile link (wireless linking via Bluetooth) Auto time adjustment Easy watch setting Approximately 300 world time cities Stopwatch data transfer Schedule timer Phone finder