Casio G-Shock Tough Solar Bluetooth Blue Dial Men's Watch | GBM-2100A-2B

Elevate your everyday style with the Casio G-shock GBM-2100A-2B Men's Watch, a modern fusion of strength, sophistication, and smart functionality. This upgraded 2100 Series model features a bold stainless-steel bezel paired with a sleek blue analog-digital dial, creating a refined look that transitions effortlessly from casual wear to business settings. Built with bio-based resin components and a durable stainless-steel bezel, the compact 44.4mm octagonal case offers lightweight comfort without sacrificing G-SHOCK toughness. Beneath the stylish exterior, the watch is powered by Tough Solar technology and equipped with Bluetooth® Smartphone Link, giving you automatic time adjustment, phone finder, and easy access to settings directly from your device.

The scratch-resistant mineral glass, Double LED light, and 200-meter water resistance ensure reliability in any environment — from the workplace to the outdoors. The soft bio-based black resin band enhances comfort, while the shock-resistant construction guarantees durability for daily wear. Whether you're dressing up or keeping it casual, the GBM-2100A-2B delivers the perfect balance of fashion-forward design and advanced utility, backed by G-SHOCK’s signature resilience.Available at Watch Zone. UPC: 4549526407673

Smartphone Link/App Connectivity Features
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), 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
Operation Guide (Opens in a new tab)