Description
Description
The CASIO G-SHOCK GMD-B300-2JF represents a modern approach to compact G-SHOCK design, combining everyday wearability with activity-focused functionality. Finished in a deep navy monochromatic color scheme, the watch delivers a versatile appearance that pairs naturally with sportswear and casual fashion. Its slim mid-size profile enhances comfort while preserving the durability and toughness that define the G-SHOCK identity.
Powered by Bluetooth smartphone connectivity and an integrated step tracker, the watch supports active daily use through automatic activity monitoring and app-linked functionality. Step counts, life-log management, and automatic time synchronization are supported through the CASIO WATCHES app, improving convenience while maintaining the simplicity of a dedicated digital timepiece. The battery-powered design delivers approximately two years of operation with minimal maintenance requirements.
Designed for users seeking a lightweight and compact G-SHOCK experience, the GMD-B300-2JF improves fit and wearability for a wider range of wrist sizes. Bio-based resin materials also support a more environmentally conscious design approach while retaining signature G-SHOCK toughness.
Key Specifications
- Case: 46.4 × 43.8 × 12.0 mm, 41g, resin / bio-based resin construction
- Bezel: Resin / bio-based resin
- Band: Navy bio-based resin band, buckle clasp
- Water resistance: 20 ATM (200m)
- Movement: Quartz, battery powered with Bluetooth Mobile Link
- Battery/Power: Approx. 2 years battery life (CR2016)
- Accuracy: ±15 sec/month (without mobile link)
- Display: Digital, dark-tone display
- Functions: Step tracker, world time, stopwatch, timer, alarms, calendar, dual time
- Special features: Shock Resistance, Bluetooth Mobile Link, Step Counter, Life Log transfer
- Illumination: LED Super Illuminator with selectable afterglow duration
- Additional: Mineral glass, low battery alert, power saving function
- Origin: Japan Domestic Market (JDM)
- Warranty: 1 year
- JAN/Model Code: GMD-B300-2JF
- Release date: May 2026
Key Highlights
The GMD-B300-2JF introduces a more lifestyle-oriented interpretation of the G-SHOCK formula. Rather than oversized tactical styling, it focuses on compact dimensions and a clean navy design suitable for daily use and active routines.
Its Bluetooth synchronized functionality and integrated step tracker add practical value beyond standard digital watches. Automatic time correction and app connectivity help simplify everyday activity tracking with minimal maintenance requirements.
On the wrist, the lightweight construction and slim profile significantly improve comfort, especially for users seeking a smaller or more versatile G-SHOCK fit. The navy color scheme offers understated styling that works across sports and casual environments.
Within the compact G-SHOCK lineup, the GMD-B300-2JF stands out as a connected digital model combining durability, comfort, and activity-focused functionality.