Casio Edifice x Ultra Slim Series ft. Smartphone Link Men Casual Formal Round 100m Water Resistant Watch EQB-1100DC-1A EQB1100DC EQB1100 EQB-1100 EQB-1100DC Experience high-performance timekeeping with a slim, solar-powered chronograph that links to your smartphone via Bluetooth. Enjoy advanced features like world time and special stopwatch functions, all wrapped in a durable, scratch-resistant design with exceptional visibility. Battery Life / Accuracy Tough solar (5 months without exposure to light) (+/-15 seconds per month) Crystal Sapphire crystal (anti-reflective coating) Luminous Luminous on hands and indexes Case & Band Material Stainless steel case with metal band (three-fold clasp with push-button release) Water Resistance 100m / 10 bar Case Size Thickness: 8.9 mm Diameter: 44.6 mm Length: 51.1 mm Other Specifications Casio Edifice x Ultra Slim Series ft. Smartphone Link Mobile link (wireless linking via Bluetooth) Dual time (home city time swapping) Chronograph up to 24 hours in 1-second increment Daily alarm Full auto-calendar (to year 2099) Power saving (hands stop to save power when left in the dark) Day, date, dual time and 24-hour indicator Regular timekeeping (analog display)