Casio Edifice x ECB-900 Series ft. Motorsports Men Casual Formal Round 100m Water Resistant Watch ECB-900DB-1A ECB900DB ECB900 ECB-900 ECB-900DB Experience the perfect blend of style and innovation with our cutting-edge digital-analog watch, featuring seamless smartphone integration, precise timekeeping, and advanced functionality. Stay ahead of the game with effortless lap timing, world time management, and automatic LED light for enhanced visibility. Battery Life / Accuracy Tough solar (6 months without exposure to light) (+/-15 seconds per month) Crystal Mineral crystal Luminous / Light Luminous on hands and indexes Double LED light (full 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: 13.9 mm Diameter: 48.0 mm Length: 51.5 mm Other Specifications Casio Edifice x ECB-900 Series ft. Motorsports Mobile link (wireless linking via Bluetooth®) World time (39 time zones) 1/1000-second stopwatch Countdown timer Hourly time signal 5 multi-function alarms Full auto-calendar (to year 2099) Button operation tone on/off Power saving (display goes blank and hands stop to save power when left in the dark) Battery level indicator 12/24-hour format Hand shift feature Regular timekeeping (analog-digital display)