BASIC INFORMATION Case size (L× W× H): 51.2 × 48 × 13.9 mm Weight: 171 g Case / bezel material: Stainless steel Band: Stainless Steel Band Water resistance: 100-meter water resistance Power supply and battery life: Tough Solar (Solar powered) Mineral glass Tachymeter Black ion plated bezel SMARTPHONE LINK/APP CONNECTIVITY FEATURES Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®) Apps: CASIO WATCHES Auto time adjustment Easy watch setting Approximately 300 world time cities Stopwatch data transfer Time & place Phone finder WATCH FEATURES World time 39 time zones* (39 cities + coordinated universal time), city name display, daylight saving on/off, auto summer time (DST) switching*May be updated when connected to a smartphone. Stopwatch 1/1000-second stopwatch Measuring capacity: 00'00''000-59'59''999 (for the first 60 minutes) 1:00'00''0-23:59'59''9 (after 60 minutes) Measuring unit: 1/1000 second (for the first 60 minutes) 1/10 second (after 60 minut