The Casio G-Shock GBM-2100A-4BER is a men’s watch that combines sleek, elegant design with a bold presence. Its metal bezel gives it a modern, stylish look, while the compact construction delivers all the benefits of a G-Shock. The case and strap are primarily made of bio-based resin, combined with stainless steel, making the watch lightweight, comfortable to wear, and exceptionally durable and shock-resistant. Weighing only 72 grams and measuring 49.3 × 44.4 × 11.9 mm, it sits comfortably on the wrist, with an adjustable strap ranging from 145 to 215 mm. The GBM-2100 features innovative Tough Solar technology, drawing energy from light so battery changes are rarely needed. Via Bluetooth, the watch can be paired with a smartphone, allowing automatic time setting and easy access to numerous functions such as world time for approximately 300 cities, stopwatch, countdown timer, daily tone alerts, and a fully automatic calendar until the year 2099. Dual LED lighting ensures optimal readability of both the dial and digital display at all times, complemented by luminescence for very dark conditions. Mineral glass protects the display reliably, and water resistance up to 20 bar makes the watch a faithful companion for all activities. The GBM-2100 is available in several color variants: blue dial with silver indexes, burgundy dial with silver indexes, or light gold dial with black indexes, catering to every style preference. Features such as battery level display, power-saving mode, phone finder, and precise timekeeping with a deviation of only ±15 seconds per month make it not only technically impressive but also a reliable choice for daily and professional life, combining robustness, design, and smart technology.
Clockwork | Quartz |
Watch type | Digital watch, Sports watch |
Waterproof | up to 200 m |
Strap fastener | Buckle |
Target group | Men |
Item number | 61157016 |
Manufacturer | Casio |
Category | Wristwatches |
Manufacturer no. | GBM-2100A-4BER |
Release date | 6.8.2025 |
Colour | Black |
Exact colour description | Black |
Target group | Men |
Watch type | Digital watch, Sports watch |
Clockwork | Quartz |
Gem type | None |
Time functions | 24h display, Alarm, Stopwatch, Timer |
Calendar | Date display, Month display, Weekday display |
Data transmission | Bluetooth |
Additional functions | Phone Finder |
Watch face colour | Red |
Lighting function | Dial illumination |
Numerals | Arabic |
Wristband colour | Black |
Strap fastener | Buckle |
Strap width | 215 mm |
Case colour | Silver |
Case material | Stainless steel |
Glass | Mineral glass |
Case diameter | 44.40 mm |
Case thickness | 11.90 mm |
Wide housing | 44.40 mm |
Housing length | 49.30 mm |
Shape of watch | Round |
Waterproof | up to 200 m |
Country of origin | Japan |
Manufacturer commitment | RE100, SBTi |
Manufacturer compensation | According to RE100, the manufacturer Casio fully compensates for its energy consumption, leading to a reduction in emissions. |
CO₂-Emission | |
Climate contribution |
Weight | 72 g |
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