Casio G-Shock GA-B2100BBR-1A Tough Solar (Bluetooth) Men's Watch

The Casio G-Shock GA-B2100BBR-1A Tough Solar Bluetooth Men’s Watch is a bold and futuristic timepiece that blends cutting-edge technology with striking design. Part of the 2100 Series, this model features a durable 45.4mm carbon-reinforced octagonal case with an 11.9mm slim profile and G-SHOCK's Carbon Core Guard structure for superior shock resistance. The all-black design is contrasted by a vibrant, high-saturation red LCD display that enhances both visibility and visual impact. The analog-digital display is housed under a scratch-resistant mineral crystal and illuminated by a white double LED light for clear viewing in the dark. Powered by Tough Solar technology, the GA-B2100BBR-1A harnesses light for continuous operation and includes Bluetooth connectivity for seamless pairing with your smartphone—allowing features like automatic time updates and easy settings adjustment via the CASIO WATCHES app. The black resin strap ensures lightweight comfort and flexibility, while 200-meter water resistance makes it suitable for water sports and everyday use. Weighing just 52g, this model combines toughness, technology, and fashion-forward styling. Whether you're on the move or making a statement, the GA-B2100BBR-1A delivers unmatched performance and bold aesthetics backed by a 2-year Watch Zone warranty. | UPC: 4549526401596

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

Watch Features:

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 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