New Casio GBM-2100A metal watches with bold bezel on the way to the UK

The Casio G-Shock GBM-2100A-2B and GBM-2100A-4B watches have appeared at the brand’s UK store. Rumors about these watches started in June 2025, and they have since been officially announced for Japan.

Casio has now listed the GBM-2100A-2B (blue dial) and the GBM-2100A-4B (burgundy dial) watches at its online store in the UK. Here, they will retail for £229, though it is unclear when they will be released. If you want to be notified of the launch, you can sign up to receive a stock alert via email. It is unclear why the previously seen third variant, the GBM-2100A-8B (white dial), is not set for release in this market.

Described as sleek watches with a bold steel bezel, these watches feature colorful dials with neobrite elements. The casing and black band are made from resin, with the watches measuring 49.3 x 44.4 x 11.9 mm (~1.9 x 1.7 x 0.5 inches) and weighing 72 g (~2.5 oz). The shock resistant watches are water resistant to 200 m and also feature Tough Solar charging, extending the battery life beyond the typical seven months.

The GBM-2100A timepieces offer Bluetooth connectivity, with some tools and settings available via the Casio Watches app. They support world time, with 38 time zones on offer, and there are tools like a 1/100th second stopwatch, five daily alarms and a countdown timer. Plus, these hybrid watches have a double LED backlight and a hands shift function, ensuring that the smaller digital display is not obstructed by the analog hands.

Whether Casio will also release the G-Shock GBM-2100A-2B and GBM-2100A-4B watches more widely in Europe, or in other markets like the US, is unclear.