Casio Edifice x Smartphone Link ft. Octagonal Men Casual Formal Hexagon 100m Water Resistant Watch ECB-10DB-1A ECB10DB ECB10 ECB-10 ECB-10DB Experience seamless connectivity with our advanced metal chronograph, featuring an octagonal bezel design. Link to your smartphone via Bluetooth and access convenient features like schedule timers and automatic time correction, all while maintaining a stylish and high-performance timepiece. Battery Life / Accuracy Approximately 2 years (+/-15 seconds per month) Crystal Mineral crystal Luminous / Light Luminous on hands and indexes Double LED light (auto LED light, super illuminator, selectable illumination duration, afterglow) Case & Band Material Stainless steel case with metal band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 12.5 mm Diameter: 48.5 mm Length: 51.0 mm Other Specifications Casio Edifice x Smartphone Link ft. Octagonal Mobile link (wireless linking via Bluetooth®) World time (38 time zones) 1/1000-second stopwatch Countdown timer 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 Flight mode Schedule beeper on/off Regular timekeeping (analog-digital display)