{"product_id":"0428degitalwatch540","title":"Casio G-Shock Gulfmaster GWN-1000B-1BJF JDM Japan Authentic","description":"\u003cp\u003e\u003cstrong\u003eLayer 1: Era Anchor\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003e2014. The year Casio drew a line in the ocean.\u003c\/p\u003e\n\n\u003cp\u003eG-Shock had conquered the mud (Mudmaster) and the sky (Gravitymaster). The sea remained. The Gulfmaster GWN-1000 debuted that June as the first Master of G built specifically for open-water navigation — carrying the Triple Sensor Ver.3 alongside the tidal and lunar data that offshore sailors actually need.\u003c\/p\u003e\n\n\u003cp\u003eTwelve years later, the GWN-1000B-1BJF remains active in exactly one market: Japan. Casio continues to produce it for Japanese sailors, fishermen, and divers who demand radio-corrected time and real instrument-grade sensors in a sub-$400 case. The rest of the world stopped receiving it years ago.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLayer 2: Object Biography\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eReference: GWN-1000B-1BJF. Module 5371. Launched June 4, 2014.\u003c\/p\u003e\n\n\u003cp\u003eCase dimensions: 44.9 × 55.8 × 16.2 mm. Weight: 101 grams. The case is currently designated by Casio as made in Japan — a distinction meaningful to collectors who track production history.\u003c\/p\u003e\n\n\u003cp\u003eFunctions that matter at sea:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTriple Sensor Ver.3 — direction, barometric pressure, temperature, on-demand or continuous\u003c\/li\u003e\n  \u003cli\u003eTide graph — current tidal state and 12-hour forecast\u003c\/li\u003e\n  \u003cli\u003eMoon data — phase display, critical for night passages\u003c\/li\u003e\n  \u003cli\u003eMulti-Band 6 — radio time correction synchronized to atomic clocks across six global stations (Japan, USA, Germany, UK, China)\u003c\/li\u003e\n  \u003cli\u003eTough Solar — no battery anxiety on multi-day offshore runs\u003c\/li\u003e\n  \u003cli\u003e200m water resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThe black ion-plated case (the \"B\" in 1BJF) resists salt-spray corrosion. The analog hands read in both analog and digital simultaneously — a design legacy from when pilots and sailors needed to read instruments, not watch displays.\u003c\/p\u003e\n\n\u003cp\u003eThis unit came out of Japanese domestic circulation. Caseback condition: clean. Band: original. Solar cell: functional. A G-Shock that has lived in the right hands knows how to keep going.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eLayer 3: Collector Connection\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eAmong the Master of G lineup, the Gulfmaster is the quiet one. The Mudmaster wins Dakar Rallys. The Gravitymaster flies with aviation teams. The Gulfmaster goes to sea, does its job, and says nothing about it.\u003c\/p\u003e\n\n\u003cp\u003eThe WatchCharts GWN-1000B index has moved +11.1% over the past year, outperforming the broader Casio index (+2.8%). Not because collectors suddenly discovered it — but because the Japanese domestic supply is finite, and the people who need it for the sea keep needing it.\u003c\/p\u003e\n\n\u003cp\u003eJDM-only models have a compounding scarcity: Casio does not ship them to international retailers. Every unit outside Japan was purchased inside Japan first.\u003c\/p\u003e\n\n\u003cp\u003eWhat would you use it for?\u003c\/p\u003e","brand":"G-SHOCK CASIO","offers":[{"title":"Default Title","offer_id":48556287131863,"sku":"0428degitalwatch540","price":225.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0618\/5392\/5591\/files\/0428degitalwatch540-1.jpg?v=1777466455","url":"https:\/\/plum-laxury.com\/products\/0428degitalwatch540","provider":"Plum Luxury Watches","version":"1.0","type":"link"}