Casio G-Shock Octagon Wristwatch GA-B2100-1A1ER

Waterproof and shockproof sports watch with quartz movement. The octagonal case is styled after the Japanese manufacturer's first G-Shock model, launched in 1983. 

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The watch's mechanism is enclosed in an internal Carbon Core Guard case, made of carbon-reinforced resin. The sturdy construction combined with G-Shock system ensures high resistance of the watch to shock and mechanical damage. The model features high water resistance and is resistant to dives up to 200 meters (20 bar), allowing safe use while swimming and even diving.


Comfortable wearing of the watch on the wrist is provided by a strap made of elastic material, fastened with a metal buckle. The material used is resistant to the harmful effects of moisture and sweat, making it perfect for a variety of activities.


The dial with hands and display allow digital-analog reading of the time, and the time is displayed in 12/24-hour format. Dual LED backlighting and Neobrite fluorescent material coverage of the hands makes it possible to operate the watch in low light or no light at all.

Thanks to the Bluetooth  system, the watch can be connected to the Casio Watches  app on your phone, allowing you to automatically adjust the time, set alarm clocks, timer and reminders, as well as manage your watch settings. In addition, the application allows you to find a lost phone with the help of the watch.

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In addition, the watch is equipped with: 5 daily alarms, an extensive calendar, stopwatch with a measurement length of up to 100 h and accuracy of 1/100 s, and timer counting down time up to 24 h. The world time function allows you to read the time in 31 time zones.

The watch is powered by sunlight using the Tough Solar function- when fully charged, it can work for up to 7 months without access to light.


Technical specifications
. Color: Black
Movement: Miyota quartz
. Time format: 12/24
Envelope: plastic
Glass: mineral
Strap: plastic
Water resistance: 20 bars (200 m)
Envelope dimensions: 48.5 x 45.4 mm
Thickness of the envelope: 11.9 mm
Maximum strap circumference: 210 mm
Weight: 52 g
Manufacturer: Casio, Japan