Description
CASIO G-SHOCK GWF-D1000BC-1JF FROGMAN
The GWF-D1000BC-1JF brings tan utility accents to the black exterior of the G-SHOCK FROGMAN. Part of the MASTER OF G - SEA series, this Japanese Domestic Market model combines Tough Solar power, MULTIBAND 6 radio-controlled timekeeping and ISO 200-meter diving water resistance with a metal-and-resin composite band.
Black Exterior with Tan Utility Accents
Purposeful design: Inspired by tactical equipment, the restrained tan accents complement the black exterior. A DLC-coated bezel and black ion-plated front screws emphasize the metal details without adding unnecessary decoration.
Tough Solar and MULTIBAND 6
Solar-powered timekeeping: Tough Solar converts light into energy to power the watch. MULTIBAND 6 receives compatible standard time signals from transmitters in Japan, China, the United States, Germany and the United Kingdom. Reception depends on location, conditions and the selected home city.
From a full charge, the watch operates for approximately 7 months without further exposure to light under normal function use, or approximately 23 months with power saving activated. Accuracy without signal reception is within ±15 seconds per month.
Diving Functions and Triple Sensor
Depth, direction and temperature: The Triple Sensor measures water depth up to 80 meters in 0.1-meter increments, compass bearing and temperature. Automatic horizontal compensation supports compass readings when the watch is tilted.
Diving functions include automatic measurement start and stop at a depth of 1.5 meters, dive-time measurement, surface interval display and an ascent-rate alarm. The log memory stores 20 dive records, including dive start date and time, dive duration, maximum depth and minimum water temperature.
Sapphire Crystal and Composite Band
Protective construction: A stainless-steel case, screw-lock case back and sapphire crystal with an internal anti-reflective coating support the watch's ISO 200-meter diving water resistance. The case back carries the FROGMAN diving-frog engraving.
The composite band combines metal and resin components, with bio-based resin used in its main resin parts. A two-stage extension allows additional length over a wetsuit, while the clasp provides fine adjustment and a double-lock mechanism.
Practical Digital Functions
World time, tide graph and moon data complement the diving functions. A stopwatch, countdown timer, five daily alarms and timestamp memory add everyday utility. The white full-auto LED Super Illuminator backlight improves visibility in low-light conditions.
Japanese Domestic Market Model
Japan-market reference: GWF-D1000BC-1JF is the Japanese Domestic Market reference. This model is made in Japan; its market designation and country of manufacture are separate specifications.
Key Highlights
- Black exterior with tan accents, a DLC-coated bezel and black ion-plated front screws
- Tough Solar power and MULTIBAND 6 radio-controlled timekeeping
- ISO 200-meter diving water resistance and shock-resistant construction
- Triple Sensor for water depth, compass bearing and temperature
- Metal-and-resin composite band with a two-stage extension
- Sapphire crystal with an internal anti-reflective coating
Product Specifications
| Brand / Collection | CASIO G-SHOCK |
|---|---|
| Series | MASTER OF G - SEA / FROGMAN |
| Model | GWF-D1000BC-1JF |
| Market | Japanese Domestic Market |
| Country of Manufacture | Japan |
| Watch Type | Men's diver's watch |
| Display | Digital |
| Exterior Color | Black with tan accents |
| Case Dimensions | 59.2 × 53.3 × 18.0 mm (length × width × thickness) |
| Weight | 181 g |
| Case / Bezel Materials | Stainless steel and resin |
| Exterior Treatments | DLC-coated bezel; black ion-plated front screws |
| Crystal | Sapphire crystal with internal anti-reflective coating |
| Case-Back | Screw-lock back with diving-frog engraving |
| Band / Bracelet | Metal and bio-based resin composite band |
| Clasp | One-push three-fold clasp with double lock, slide adjustment and two-stage extension |
| Compatible Wrist Size | 150–220 mm |
| Movement Type | Tough Solar solar-powered quartz with MULTIBAND 6 radio-controlled timekeeping |
| Module | 3445 |
| Operating Time | Approximately 7 months with normal function use; approximately 23 months with power saving, from a full charge without further light exposure |
| Accuracy | ±15 seconds per month without time-signal reception |
| Radio Reception | Standard time signals from Japan, China, the United States, Germany and the United Kingdom; automatic and manual reception, subject to reception conditions and home-city settings |
| Triple Sensor | Water depth: 0.0–80.0 m in 0.1 m increments; compass bearing: 0–359° with automatic horizontal compensation; temperature: −10 to 60°C in 0.1°C increments |
| Diving Functions | Dive time up to 6 hours; automatic start/stop at 1.5 m depth; surface interval up to 48 hours; ascent-rate alarm; 20-record dive log |
| World Time | 48 cities across 31 time zones plus UTC; daylight saving time setting |
| Tide / Moon Data | Six-level tide graph; moon age and moon phase |
| Stopwatch / Timer | 1/100-second stopwatch with 100-hour capacity and split time; countdown timer adjustable up to 24 hours in 1-minute increments |
| Alarms | Five daily alarms, including one snooze alarm; hourly time signal |
| Light | White full-auto LED Super Illuminator backlight with selectable 1.5- or 3-second afterglow |
| Additional Functions | Full-auto calendar; 12/24-hour format; 20-record timestamp memory; button-tone on/off; battery level indicator |
| Water Resistance | ISO 200-meter diving water resistance |
| Shock Resistance | Shock-resistant construction |
| Release Period | September 2026 (Japan) |
| JAN Code | 4549526430800 |