Casio G-Shock GBM-2100A-1A3 Tough Solar Bluetooth Green Dial Men's Watch

This Casio G-shock GBM-2100A-1A3 watch combines durability, eco-conscious design, and modern connectivity. It features a case size of 49.3 × 44.4 × 11.9 mm and weighs 72 grams. The case and bezel are made from a mix of bio-based resin and stainless steel, with a matching bio-based resin band. The watch is designed to be shock-resistant and water-resistant up to 200 meters, making it suitable for various outdoor activities.
Powered by tough solar technology, the watch ensures reliable solar energy performance. It also offers advanced smartphone connectivity via Bluetooth, linking to the CASIO WATCHES app for auto time adjustment, easy watch settings, world time for approximately 300 cities, reminders, time & place functionality, and a phone finder feature. The exterior is protected by mineral glass and features Neobrite for enhanced low-light visibility. The band is compatible with wrist sizes from 145 to 215 mm, offering a comfortable fit.  

Casio G-Shock GBM-2100-1A3DR Green Dial Tough Solar Bluetooth Men's Watch. The GBM-2100 watch merges rugged metal-clad design with sophisticated style, featuring a meticulously finished metal case and the iconic octagonal bezel. This timepiece not only stands out for its bold aesthetic but also offers modern functionality with a Smartphone Link via Bluetooth® for seamless connectivity and a Tough Solar charging system that ensures reliable power. The watch combines advanced technology with a sleek, polished look, making it a perfect blend of daring design and refined elegance. Available at Watch Zone

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)