Description
Description:
The GWN-1000B-1BJF represents CASIO's MASTER OF G GULFMASTER philosophy—a maritime-oriented analog-digital chronograph built for ocean explorers, fishermen, and diving professionals. Sized 44.9 × 55.8 × 16.2 mm, weighing only 101 g, it achieves a lighter profile than the land-focused Mudmaster while maintaining full Triple Sensor Ver. 3 capability. The sensor suite measures compass bearing (with continuous 60-second measurement), atmospheric pressure/altitude (260–1,100 hPa range with 20-hour trend graphing), and temperature (−10 to +60°C), enabling real-time weather assessment and precise depth estimation for sea operations. Tough Solar + Multi-Band 6 provides autonomous power—approximately 6 months on full charge, extending to 25 months in power-save mode. Moon phase data and integrated tide graph support maritime timing and fishing schedules. Resin construction throughout (hollow-core shock resistance), inorganic glass crystal, and 20 ATM water resistance prioritize oceanic reliability. Origin: Japan (JDM), Warranty: 1 year, JAN: 4971850999362, Released: September 2014.
Key Specifications:
- Case: 44.9 × 55.8 × 16.2 mm; Weight: 101 g
- Material: Resin case and bezel / stainless-steel case band accent
- Band: Resin with padded comfort section, adjustable
- Crystal: Inorganic glass (mineral)
- Water resistance: 20 ATM (200 m)
- Movement: Quartz calibre 5371, Tough Solar + Multi-Band 6
- Battery life: ~6 months (full charge), ~25 months (power-save)
- Accuracy: ±15 s/month (radio-controlled), ±20 s/month (battery)
- Display: Analog hands + digital LCD (tactical negative)
- Functions: Triple Sensor Ver. 3 (compass with continuous 60-sec measurement + bearing correction, barometer 260–1,100 hPa + 20-hour trend graph, thermometer −10 to +60°C), world time, moon phase (moon data only), tide graph, 1/100-second stopwatch (split-timing), 1-minute countdown timer (max 1 hr), 5 alarms, hourly signal, perpetual calendar, date/day, 12/24-hour format, power-save mode, battery indicator
- Illumination: LED (white), Neobrite hands
- Special: Triple Sensor Ver. 3, shock-resistant (hollow-core), compass continuous measurement, tide graph integration, moon-phase display, marine-optimized
- Origin: Japan (JDM)
- Warranty: 1 year
- JAN: 4971850999362
- Release date: September 2014
Key Highlights: The GWN-1000B-1BJF dedicates itself to maritime professionals through Triple Sensor Ver. 3 and integrated tide-graph technology—resources inaccessible on land models. At only 101 g with a compact 55.8 mm case, it achieves exceptional wearability on diverse arm sizes compared to bulkier competitors. Compass bearing measurement with continuous 60-second active sensing, barometer with 20-hour pressure-trend graphing, and thermometer enable autonomous weather forecasting without smartphone dependency. Integrated moon-phase data and tide graphs synchronize with lunar cycles—invaluable for fishing, tidal navigation, and oceanic operations. Resin construction prioritizes buoyancy and corrosion resistance in saltwater; 20 ATM water resistance suits diving, boating, and maritime rescue. Solar + Multi-Band 6 eliminates battery replacements for extended deployments at sea. Recommended for commercial fishermen, maritime rescue personnel, sailing enthusiasts, oceanographers, and collectors valuing tactical maritime G-SHOCK heritage.