Description
CASIO G-SHOCK 6900 Series GW-6900U-1JF
The CASIO G-SHOCK GW-6900U-1JF is a Japanese Domestic Market digital watch that combines the iconic 6900-series design with Multiband 6 radio-controlled timekeeping, Tough Solar power and a high-brightness full-auto LED backlight. Its classic black colour scheme provides a versatile appearance suitable for streetwear, sports and everyday use.
Iconic 6900-Series Design
The GW-6900U retains the distinctive round case, front light button and triple-graph display associated with the long-running G-SHOCK 6900 series. This instantly recognisable design has been used for numerous collaboration models and has established a strong presence in music, fashion and street culture.
Multiband 6 Radio-Controlled Timekeeping
Multiband 6 technology receives standard time-calibration radio signals from six transmitters located in Japan, North America, the United Kingdom, Germany and China. When the watch is used within a compatible reception area, it can automatically correct its time for dependable everyday accuracy.
Tough Solar Power
CASIO Tough Solar technology converts light from the sun and indoor lighting into electrical energy. After a full charge, the watch can operate for approximately ten months without further light exposure, or approximately 26 months when stored under power-saving conditions.
Updated Full-Auto LED Backlight
The GW-6900U is equipped with a high-brightness white LED Super Illuminator. The full-auto light can illuminate the display when the watch is tilted toward the wearer in low-light conditions, while the afterglow duration can be set to either 1.5 or 3 seconds.
World Time and Daily Functions
World time covers 48 cities across 31 time zones and includes UTC display, direct UTC access and daylight-saving-time settings. The watch also features five daily alarms, one snooze alarm, an hourly time signal, a 24-hour stopwatch and a 24-hour countdown timer.
G-SHOCK Durability
Shock-resistant construction protects the module against impacts encountered during daily use. A mineral glass crystal, durable resin case and band, and 20-bar water resistance provide the dependable construction expected from a classic G-SHOCK digital watch.
Key Features
- Japanese Domestic Market model
- Iconic G-SHOCK 6900-series design
- Multiband 6 radio-controlled timekeeping
- Tough Solar charging system
- High-brightness white LED Super Illuminator
- Full-auto light with afterglow
- World time for 48 cities and 31 time zones
- 1/100-second stopwatch with 24-hour capacity
- 24-hour countdown timer
- Five daily alarms, including one snooze alarm
- Shock-resistant construction
- 20-bar / 200 m water resistance
Product Specifications
| Brand | CASIO |
|---|---|
| Collection | G-SHOCK |
| Series | DIGITAL 6900 SERIES |
| Model | GW-6900U-1JF |
| Market | Japanese Domestic Market |
| Release Date | 16 January 2026 |
| Watch Type | Solar-powered radio-controlled digital quartz |
| Gender | Men’s |
| Module | 3547 |
| Display | Digital LCD |
| Colour | Black |
| Power System | Tough Solar |
| Time Adjustment | Multiband 6 radio-controlled timekeeping |
| Case and Bezel Material | Resin |
| Case Size | 53.2 × 50.0 × 17.7 mm |
| Weight | 71 g |
| Glass | Mineral glass |
| Band | Resin band |
| Compatible Wrist Size | 145–205 mm |
| Construction | Shock resistant |
| Water Resistance | 20 bar / 200 m |
| World Time | 48 cities, 31 time zones and UTC |
| Stopwatch | 1/100 second, 24-hour capacity and split time |
| Timer | 24-hour countdown timer, one-minute setting increments and one-second measurement |
| Alarm | Five daily alarms, including one snooze alarm, and hourly time signal |
| Backlight | Full-auto LED Super Illuminator with afterglow |
| Light Colour | White |
| Illumination Duration | Selectable 1.5 or 3 seconds |
| Calendar | Full auto-calendar |
| Time Format | 12-hour / 24-hour |
| Operating Time | Approximately 10 months after a full charge without further light exposure |
| Power-Saving Operating Time | Approximately 26 months |
| Accuracy Without Radio Reception | ±15 seconds per month |
| Additional Functions | Button-tone operation on/off, battery-level indicator and power saving |
| Bluetooth / Smartphone Link | Not supported |
| JAN Code | 4549526418655 |