Casio G-Shock GA-B2100LUU-5A

Analogue clock, Digital clock, 53.20 mm
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Product details

The Casio G-Shock GA-B2100LUU-5A is a highly robust and functional wristwatch that combines both digital and analog displays. It is specifically designed for people who need a reliable watch for active lifestyles. With its solar-powered battery system, the watch is charged by daylight or artificial light, eliminating the need for frequent battery changes. The integrated Bluetooth connectivity allows for automatic time adjustment via a smartphone, ensuring the watch remains precise no matter the time zone. G-Shock technology provides shock resistance, while scratch-resistant mineral glass and a stainless steel bezel enhance durability. With water resistance up to 200 meters, it is ideal for water sports and other outdoor activities. The watch also offers a variety of functions, including world time for 39 cities, multiple alarms, a stopwatch, and a countdown timer. The comfortable resin strap with a buckle clasp completes the overall look and ensures a secure fit.

  • Solar-powered watch for sustainable use
  • Bluetooth connectivity for automatic time adjustment
  • Water-resistant up to 200 meters, suitable for water sports
  • Shock-resistant for active lifestyles
  • Scratch-resistant mineral glass for enhanced durability.

Key specifications

Target group
Men
Watch type
Analogue clockDigital clock
Clockwork
Solar
Calendar
Date displayWeekday display
Wristband material
Resin
Strap fastener
Buckle
Waterproof
up to 200 m

General information

Item number
65809830
Manufacturer
Casio
Category
Wristwatches
Release date
17.12.2025
Sales rank in Category Wristwatches
1566 of 28529

Colour

Colour
BlackGrey
Exact colour description
Grey

Target group

Target group
Men

Watch properties

Watch type
Analogue clockDigital clock
Clockwork
Solar

Wristwatch functions

Time functions
Stopwatch
Calendar
Date displayWeekday display
Data transmission
Bluetooth
Additional functions
Lighting

Display + Watch face

Watch face colour
Black
Lighting function
Dial illumination
Numerals
Arabic

Wristband properties

Wristband colour
Grey
Wristband material
Resin
Strap fastener
Buckle
Strap width
20 mm

Case properties

Case colour
BlackGrey
Case material
Plastic
Glass
Mineral glass
Case diameter
53.20 mm
Case thickness
16.90 mm
Wide housing
48.50 mm
Housing length
48.50 mm
Shape of watch
Square

Durability

Waterproof
up to 200 m

Sustainability

Manufacturer commitment
RE100SBTi

Product dimensions

Weight
72 g

Package dimensions

Length
11.60 cm
Width
9.80 cm
Height
8.60 cm
Weight
151 g

30-day right of return

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Reviews & Ratings

Warranty score

How often does a product of this brand in the «Wristwatches» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 2.Tikkers
    0.5 %
  • 3.Calypso
    0.6 %
  • 4.Casio
    0.7 %
  • 5.Casio Vintage
    0.8 %
  • 5.G-Shock
    0.8 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 1.Accutime
    0 days
  • 1.Casio
    0 days
  • 1.Casio Vintage
    0 days
  • 1.Cool Time Kids
    0 days
  • 1.Disney
    0 days

Return rate

How often is a product of this brand in the «Wristwatches» category returned?

Source: Digitec Galaxus
  • 9.Disney
    4.6 %
  • 10.Calypso
    4.8 %
  • 10.Casio
    4.8 %
  • 12.M Watch Mondaine
    5 %
  • 13.Tamaris
    5.2 %
Source: Digitec Galaxus