G-SHOCK 2100 Series GBM2100A-4B

Smart and stylish, sleek and sophisticated — a GBM2100 with bold metal bezel that delivers Smartphone Link and Tough Solar charging system, all in the same compact size. Key resin components used in the case and band are made with environmentally responsible bio-based resin. Choose your favorite color combination of vapor deposition finishes — the GBM2100A-2B with blue dial and silvery indexes, the GBM2100A-4B with burgundy dial and silvery indexes, or the GBM2100A-8B with light yellow gold-colored dial and black accented indexes. Tough construction and stylish design in a timepiece that takes you from casual settings to business meetings with ease. Basic Information Case size (L× W× H) 49.3 × 44.4 × 11.9 mm Weight 72 g Case and bezel material Bio-based Resin / Stainless steel Band Bio-based resin band Construction Shock Resistant Water resistance 200-meter water resistance Time adjustment Bluetooth: Connects to a smartphone and automatically adjusts the time Power supply and battery life Tough Solar (Solar powered) Smartphone Link/App Connectivity Features Smartphone Link feature Mobile link (Wireless linking using Bluetooth®) Apps CASIO WATCHES App connectivity feature Auto time adjustment Easy watch setting Approximately 300 world time cities Time & place Reminder Phone finder Exterior Glass Mineral Glass Compatible band size 145 to 215 mm Other Neobrite Watch Features World time World time 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping Stopwatch 1/100-second stopwatch Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes) 1:00'00~23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, lap/split time Timer Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments) Alarm/hourly time signal 5 daily alarms Hourly time signal Light Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Light color LED:White Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Energy saving feature Power Saving (display goes blank to save power when the watch is left in the dark) Battery display/alert Battery level indicator Run time Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy Accuracy: ±15 seconds per month (with no mobile link function) Other features Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) 12/24-hour format Date/month display swapping Day display (days of the week selectable in six languages) Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode) Digital: Hour, minute, second, pm, month, date, day