{"product_id":"casio-g-shock-gulfmaster-gwn-1000b-1bjf-jdm-master-of-g-triple-sensor-analog-digital-solar-radio-maritime-mens-watch","title":"CASIO G-SHOCK GULFMASTER GWN-1000B-1BJF JDM Master of G Triple Sensor Analog-Digital Solar Radio Maritime Men's Watch","description":"\u003cp data-source-line=\"43-44\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp data-source-line=\"43-44\"\u003e 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.\u003c\/p\u003e\n\u003cp data-source-line=\"46-46\"\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-source-line=\"47-63\"\u003e\n\u003cli data-source-line=\"47-47\"\u003eCase: 44.9 × 55.8 × 16.2 mm; Weight: 101 g\u003c\/li\u003e\n\u003cli data-source-line=\"48-48\"\u003eMaterial: Resin case and bezel \/ stainless-steel case band accent\u003c\/li\u003e\n\u003cli data-source-line=\"49-49\"\u003eBand: Resin with padded comfort section, adjustable\u003c\/li\u003e\n\u003cli data-source-line=\"50-50\"\u003eCrystal: Inorganic glass (mineral)\u003c\/li\u003e\n\u003cli data-source-line=\"51-51\"\u003eWater resistance: 20 ATM (200 m)\u003c\/li\u003e\n\u003cli data-source-line=\"52-52\"\u003eMovement: Quartz calibre 5371, Tough Solar + Multi-Band 6\u003c\/li\u003e\n\u003cli data-source-line=\"53-53\"\u003eBattery life: ~6 months (full charge), ~25 months (power-save)\u003c\/li\u003e\n\u003cli data-source-line=\"54-54\"\u003eAccuracy: ±15 s\/month (radio-controlled), ±20 s\/month (battery)\u003c\/li\u003e\n\u003cli data-source-line=\"55-55\"\u003eDisplay: Analog hands + digital LCD (tactical negative)\u003c\/li\u003e\n\u003cli data-source-line=\"56-56\"\u003eFunctions: 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\u003c\/li\u003e\n\u003cli data-source-line=\"57-57\"\u003eIllumination: LED (white), Neobrite hands\u003c\/li\u003e\n\u003cli data-source-line=\"58-58\"\u003eSpecial: Triple Sensor Ver. 3, shock-resistant (hollow-core), compass continuous measurement, tide graph integration, moon-phase display, marine-optimized\u003c\/li\u003e\n\u003cli data-source-line=\"59-59\"\u003eOrigin: Japan (JDM)\u003c\/li\u003e\n\u003cli data-source-line=\"60-60\"\u003eWarranty: 1 year\u003c\/li\u003e\n\u003cli data-source-line=\"61-61\"\u003eJAN: 4971850999362\u003c\/li\u003e\n\u003cli data-source-line=\"62-63\"\u003eRelease date: September 2014\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-source-line=\"64-65\"\u003e\u003cstrong\u003eKey Highlights\u003c\/strong\u003e: 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.\u003c\/p\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":47611481358591,"sku":"608276","price":72100.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/udetokei-watch_608276.jpg?v=1764514148","url":"https:\/\/japanheartfulstore.com\/products\/casio-g-shock-gulfmaster-gwn-1000b-1bjf-jdm-master-of-g-triple-sensor-analog-digital-solar-radio-maritime-mens-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}