Casio Edifice x ECB-S100 Series ft. Heat Gradation Men Casual Formal Round 100m Water Resistant Watch ECB-S100HG-1A ECBS100HG ECBS100 ECB-S100 ECB-S100HG Unleash your inner speed demon with a chronograph that combines automotive flair with cutting-edge tech. Bluetooth connectivity, precision timekeeping, and advanced features like lap time tracking and phone finding make this timepiece a high-performance accessory for the modern thrill-seeker. Battery Life / Accuracy Tough solar (7 months without exposure to light) (+/-15 seconds per month) Crystal Sapphire crystal (anti-reflective coating) Luminous / Light Luminous on hands and indexes Double 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: 9.8 mm Diameter: 46.0 mm Length: 50.0 mm Other Specifications Casio Edifice x ECB-S100 Series ft. Heat Gradation Mobile link (wireless linking via Bluetooth®) World time (38 time zones) 1/100-second stopwatch Countdown timer (progress beeper) 5 daily alarms (with progress beeper) 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 12/24-hour format Day display (days of the week selectable in six languages) Hand shift feature Regular timekeeping (analog-digital display)