G-SHOCK
 

Classic

GM-B2100GD-9AER

GM-B2100GD-9AER
GM-B2100GD-9AER
GM-B2100GD-9AER
GM-B2100GD-9AER
 
Variations:

CASIO WATCHES

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System Requirements
iOS: iOS 13 or later
Android: Android 8.0 or later
Bluetooth®: Bluetooth® 4.0 or later
GM-B2100GD-9AER

All features

Bluetooth® Smart
The watch is equipped with energy-saving Bluetooth® technology, which offers power-saving data transfer at the push of a button. The watch can connect to a smartphone wirelessly via Bluetooth®, enabling access to a wide range of useful functions.
Smartphone time
Local time will automatically be adjusted whenever the watch is connected with a smartphone.
Double-Illuminator
Both the digital and analogue areas of the watch face glow when the EL backlight is turned on.
Shock-resistant
Shock-resistant construction protects against impact and vibration.
Vibration-resistant
alphaGEL elements surround the watch, making it even more resistant to shocks and vibrations. alphaGEL is a silicone material. It is extremely flexible and has a cushioning effect on the module.
Solar Power
Invisible solar cells in the watch convert light into energy and supply all functions. A rechargeable battery provides the necessary capacity for operation in poor light conditions.
Neo-display
A luminous coating provides long-term illumination in the dark after only a short exposure to light.
World time function
The world time function displays local times in up to 29 different time zones.
Stopwatch function - 1/100 sec. - 24 hours
Elapsed time, split time and final time are measured with 1/100-sec accuracy. The watch can measure times of up to 24 hours.
Timer - 1/1 sec. - 1 hour
For fans of precision: the countdown timers help you to remember specific or recurring events by giving off an audible signal at a preset time. The time can be set to the nearest second and up to 1 hour in advance - Ideal for people who need to take medicines every day or those who do interval training.
5 daily alarms
The daily alarm reminds you about recurring events with an acoustic signal at the time you have set. This model has 5 independent alarms for flexible reminders of important appointments.
Multi-language
The name of the day can be displayed in different languages.
Button tones on/off
The button tones for using the mode button can be turned off. This means that the watch no longer beeps when switching from one function to another. Preset alarm or countdown timers remain active when the button tones are deactivated.
Hand Moving Function
With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date.
Phone Finder
Misplaced your smartphone? All it takes is the push of a button on your watch and the smartphone sounds an alarm.
Automatic calendar with Date, Day and Month
Once set, the automatic calendar always displays the correct date.
12/24-hour format
Times can be displayed in either a 12-hour or 24-hour format.
Mineral glass
The tough mineral glass resists scratching.
Case with IP finish
The case of the watch is coated by the so-called "ion plating" process consuming and offers the advantage of increased scratch resistance.
Solid stainless steel case
The solid stainless steel watch case provides a valued and robust quality.
Screw locked back
The screw connection on the base of the housing optimally protects the inner workings of the watch and simultaneously provides easy access, when changing the battery for example.
Bracelet with IP finish
The bracelet is coated by the so-called "ion plating" process consuming and offers the advantage of increased scratch resistance.
Solid stainless steel band
Tough, durable and elegant: The solid stainless steel wrist strap gives your watch that high-quality, classic feel.
Safety Catch
Always reliable: This watch has a particularly secure safety catch, which helps prevent the strap from opening by mistake.
Battery level indicator
An indicator shows the current battery level.
Water resistance classification (20 bar)
Perfect for free diving without scuba gear: the watch is water resistant up to 20 bar according to ISO 22810.
Chronometric precision
Smartphone Link Seconds per month
Dimensions
49,8 mm x 44,4 mm x 12,8 mm (H x W x D)
Weight
165,0 g
Technical amendments and errors excepted for all watch models shown here. The sizes depicted are not the actual sizes. The colours shown may differ slightly from the actual colours.