Casio is expanding its G-Steel lineup with the GST-B1000BD series, a new pair of watches that scale down the traditionally bulky G-Shock form factor while keeping the standard metal build and Bluetooth connectivity.
The two new models, the GST-B1000BD-1A (black) and GST-B1000BD-2A (blue), are slated for release in June 2026 with a price of ¥75,900 ($474) in Japan.
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Design and Build
The watches measure 46.9 by 44.2 millimeters and are 11.6 millimeters thick.
To achieve the reduced thickness, Casio used a smaller internal module and a different glass bonding method.
The core of the watch is made from a bio-based carbon-reinforced resin, which is then protected by a stainless steel bezel.
Visually, both the 1A and 2A models are entirely black.
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Casio applied a black ion plating to almost every metal part, including the bezel, the stainless steel bracelet, the side buttons, the screw-lock crown, the clasp, and the exterior screws.
The bezel itself is simpler than usual; it doesn't have the large G-Shock branding engraved into it.
Instead, it just uses a mix of brushed and polished metal finishes for texture.
Battery and Connectivity
The GST-B1000BD series runs on Casio's Tough Solar charging system.
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The watch will run for about five months on a single charge under normal conditions, or up to 18 months if it is left in the dark with its power-saving mode turned on.
It also includes Bluetooth for smartphone pairing. By linking the watch to the Casio Watches app, it will automatically sync the correct time.
The app also allows you to adjust watch settings, log your time and location, and trigger a phone finder feature.
Other Features
The hardware includes the usual G-Shock specifications: 200-meter water resistance, a mineral glass crystal, and a white LED light for reading the analog dial in the dark.
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The dial itself features three main hands and two sub-dials for the day and a 24-hour clock, alongside basic 30-minute stopwatch, countdown timer, and daily alarm functions.
