GA-2100MF-1A
Bold black meets vibrant color in these tough G-SHOCK watches with fluorescent accents. The matte black bezel and band contrast stylishly with touches of vivid blue, pink, and yellow on the hands, hour markers, and dial marks, transporting you to a virtual world. Playful and bold, these designs will crush in any fashion scene. Choose your favorite of five timepieces — the GA-100, GA-110, or GA-700 with large case; the GA-B2100 with octagonal bezel plus Bluetooth and solar charging; or the GX-56 digital watch with large case. Cool matte black and fluorescent colors come together in a stand-out pairing. Which one do you want?
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Case size (L× W× H)
48.5 × 45.4 × 11.9 mmWeight
52 gCase and bezel material
Carbon / Bio-based resinBand
Bio-based resin bandConstruction
Shock ResistantCarbon Core Guard structureWater resistance
200-meter water resistancePower supply and battery life
Tough Solar (Solar powered)Smartphone Link feature
Mobile link (Wireless linking using Bluetooth®)Apps
CASIO WATCHESApp connectivity feature
Auto time adjustmentEasy watch settingApproximately 300 world time citiesTime & placeReminderPhone finderGlass
Mineral GlassCompatible band size
145 to 215 mmOther
NeobriteWorld time
World time 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swappingStopwatch
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 timeTimer
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 alarmsHourly time signalLight
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:WhiteCalendar
Full auto-calendar (to year 2099)Mute feature
Button operation tone on/offEnergy saving feature
Power Saving (display goes blank to save power when the watch is left in the dark)Battery display/alert
Battery level indicatorRun 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 formatDate/month display swappingDay 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