Casio G-shock "CasiOak" Tough Solar

G-SHOCK GBM-2100: metal bezel, compact format 49.3 × 44.4 × 11.9 mm (72 g), shock-resistant structure and water resistance 20 bar; Tough Solar with power saving and battery level indicator (estimated life: 7 months normal use / 18 months in darkness); Smartphone Link via Bluetooth (CASIO WATCHES app) for automatic time adjustment, world time (~300 cities), reminders, time & location, Find My Phone; case/bracelet in bio-based resin and steel, mineral glass, Neobrite, strap adjustable 145–215 mm; dual LED light (Super Illuminator) for dial and display; functions: world time 38 zones, 1/100-second stopwatch, 60-minute timer, 5 alarms, hourly time signal, automatic calendar through 2099, key mute, 12/24-hour format, hand-shift function, date/month and day switching in 6 languages.