Description
CASIO G-SHOCK GWF-1000-1JF FROGMAN
The CASIO G-SHOCK GWF-1000-1JF FROGMAN combines ISO-compliant 200-meter diving water resistance with Tough Solar power and MULTIBAND 6 radio-controlled timekeeping. Part of the MASTER OF G - SEA collection, this Japanese Domestic Market model features a black exterior, a digital display and a resin band.
Purpose-Built FROGMAN Construction
A shock-resistant structure protects the stainless steel and resin construction. The screw-back metal case receives a DLC surface treatment, while a mineral glass crystal protects the display. Machined stainless steel front screws and an aluminum display surround add distinctive finishing details.
The case measures 58.3 mm long, 52.8 mm wide and 18.0 mm thick, with a total weight of approximately 115 g.
Tough Solar and MULTIBAND 6
Tough Solar converts light into energy to power the watch. MULTIBAND 6 receives standard time signals from six transmitters covering Japan, China, the United States, Germany and the United Kingdom. Reception depends on location, conditions and the selected Home City.
From a full charge without further exposure to light, operating time is approximately eight months with normal function use, or approximately 26 months with power saving. Without radio reception, rated accuracy is ±15 seconds per month.
Dive Timing, Tide Graph and Moon Data
Dive Mode measures dive time and surface intervals, with memory for up to 10 dive logs. Recorded information includes the dive start date and time, dive duration and log number.
A tide graph and moon data display provide additional information for the selected location and date. These functions complement the watch's ISO-compliant 200-meter diving water resistance.
Practical Digital Functions
World time covers 48 cities across 31 time zones, plus UTC. A 24-hour stopwatch, countdown timer, five daily alarms and an hourly time signal support everyday use.
The full-auto EL backlight illuminates the display in blue-green, with selectable illumination duration and afterglow. A battery level indicator and power-saving function help manage the remaining charge.
Japanese Domestic Market Model
The GWF-1000-1JF is a Japanese Domestic Market (JDM) reference. This model is made in Japan.
Key Highlights
- ISO-compliant 200-meter diving water resistance.
- Tough Solar power and MULTIBAND 6 radio-controlled timekeeping.
- Dive and surface-interval timing with memory for 10 dive logs.
- Tide graph, moon data and full-auto EL illumination.
Product Specifications
| Brand / Collection | CASIO G-SHOCK |
|---|---|
| Series | MASTER OF G - SEA / FROGMAN |
| Model | GWF-1000-1JF |
| Market | Japanese Domestic Market |
| Country of Manufacture | Japan |
| Watch Type | Men's digital diver's watch |
| Exterior Color | Black |
| Case Dimensions | 58.3 × 52.8 × 18.0 mm; length × width × thickness |
| Weight | Approximately 115 g |
| Case / Bezel Material | Stainless steel and resin |
| Case-Back | Screw-back metal case with DLC surface treatment |
| Crystal | Mineral glass |
| Band | Black resin band |
| Movement Type | Tough Solar light-powered radio-controlled quartz |
| Module | 3184 |
| Operating Time | Approximately 8 months with normal function use; approximately 26 months with power saving, from a full charge without further light exposure |
| Accuracy | ±15 seconds per month without radio reception |
| Radio Reception | MULTIBAND 6: Japan (JJY 40/60 kHz), United States (WWVB), Germany (DCF77), United Kingdom (MSF) and China (BPC) |
| Reception Modes | Automatic reception up to 6 times daily, or 5 times for the Chinese signal; manual reception |
| Dive Timing | 1-second increments; up to 23 hours, 59 minutes, 59 seconds |
| Surface Interval | 1-minute increments; up to 47 hours, 59 minutes |
| Dive Log Memory | 10 logs; dive start date and time, dive duration, duration graphic and log number |
| Tide / Moon Data | Tide graph with three-level tide indication; moon age and moon phase display |
| World Time | 48 cities across 31 time zones plus UTC; daylight saving time setting and Home City swap |
| Stopwatch | 1/100-second measurement; 24-hour capacity; split time |
| Countdown Timer | Up to 24 hours; 1-minute setting increments; 1-second countdown |
| Alarms | 5 daily alarms, including one snooze alarm; hourly time signal |
| Illumination | Blue-green full-auto EL backlight; selectable 1.5- or 3-second duration; afterglow |
| Additional Functions | Full auto-calendar, 12/24-hour format, button tone on/off and battery level indicator |
| Shock Resistance | Shock-resistant construction |
| Water Resistance | ISO-compliant 200-meter diving water resistance |
| Release Period | September 2009 |
| JAN Code | 4971850437819 |