G-SHOCK
 

Classic

GM-2100B-4AER

GM-2100B-4AER
GM-2100B-4AER
 
Variations:

Details

Octagonal form exudes toughness

The bezel adopts the octagonal design motif
the G-SHOCK has featured since the very first
watch. Undergoing painstaking processes of
forging, cutting and polishing, the bezel is
precisely crafted — from its intricately
shaped face to the form of its back, which is
the key to the precision fit it makes with the
inner case. A round hairline finish is applied
to the top surface and a mirror polish to the
sides, giving the bezel a beautiful gleam.

Ever evolving toughness: Metal-clad shock-resistant structure

A stainless steel bezel with exceptional strength and inner case made of damage- and deformation-resistant glass fibre-reinforced resin safeguards the module. Tiny protrusions on the inner case reduce surface contact with the bezel to cushion shocks to the module. Cutting-edge technology is applied to the original G-SHOCK concept of hollow construction to deliver a shock-resistant structure with a metal exterior.



All features

LED light
A light-emitting diode (LED) is used to illuminate the watch face.
Shock-resistant
Shock-resistant construction protects against impact and vibration.
Neo-display
A luminous coating provides long-term illumination in the dark after only a short exposure to light.
World time function
Displays the current time in major cities and specific areas around the world.
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. - 24 hours
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. They The time can be set to the nearest second and up to 24 hours in advance.
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.
Hand Moving Function
With a push of a button, hands are moving and permit a free visibility of functions like stopwatch or date.
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.
Automatic calendar with Date, Day and Month
Once set, the automatic calendar always displays the correct date.
12/24-hour timekeeping
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.
Glass fiber reinforced resin case combined with stainless steel
The combination of stainless steel and glass fiber reinforced resin supports the stability of the watch and provides a better wearing comfort.
Resin band
Synthetic resin is the ideal material for wrist straps thanks to its extremely durable and flexible properties.
Buckle
The bracelet is equipped with a buckle.
3 Years - 1 Battery
The battery supplies the watch with sufficient energy for approx. three years.
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
+/- 15 Seconds per month
Battery type
SR726W x 2
Dimensions
49,3 mm x 44,4 mm x 11,8 mm (H x W x D)
Weight
72 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.