{"product_id":"casio-g-steel-gst-b100d-1ajf-jdm-black-diamond-solar-radio-analog-digital-mens-watch","title":"CASIO G-STEEL GST-B100D-1AJF JDM Black Diamond Solar Radio Analog-Digital Men's Watch","description":"\u003cp data-source-line=\"11-12\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp data-source-line=\"11-12\"\u003e The GST-B100D-1AJF represents CASIO's G-STEEL line pinnacle—a hybrid resin-stainless-steel case design combining tactical aesthetics with professional durability. Sized 58.1 × 53.8 × 14.1 mm, weighing 185 g, this model features a large black resin lower case with stainless-steel upper bezel and case band, delivering a distinctive two-tone visual impact. Powered by Tough Solar with Multi-Band 6 radio-controlled time sync, it eliminates battery changes entirely—approximately 5 months on full charge, extending to 24 months in power-save mode. The large LCD negative-display dial ensures excellent legibility in all lighting conditions via LED Super Illuminator backlight. Built with Triple-G-Resist construction (shock, magnetic, centrifugal resistance), it suits both professional fieldwork and formal settings. Origin: Japan (JDM), Warranty: 1 year, JAN: 4549526236289, Released: April 2020.\u003c\/p\u003e\n\u003cp data-source-line=\"14-14\"\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-source-line=\"15-30\"\u003e\n\u003cli data-source-line=\"15-15\"\u003eCase: 58.1 × 53.8 × 14.1 mm; Weight: 185 g\u003c\/li\u003e\n\u003cli data-source-line=\"16-16\"\u003eMaterial: Resin lower case \/ stainless-steel upper bezel and band\u003c\/li\u003e\n\u003cli data-source-line=\"17-17\"\u003eBand: Stainless-steel composite with 3-fold push clasp, adjustable 145–215 mm\u003c\/li\u003e\n\u003cli data-source-line=\"18-18\"\u003eCrystal: Mineral glass\u003c\/li\u003e\n\u003cli data-source-line=\"19-19\"\u003eWater resistance: 20 ATM (200 m)\u003c\/li\u003e\n\u003cli data-source-line=\"20-20\"\u003eMovement: Quartz calibre 5513, Tough Solar + Multi-Band 6\u003c\/li\u003e\n\u003cli data-source-line=\"21-21\"\u003eBattery life: ~5 months (full charge), ~24 months (power-save)\u003c\/li\u003e\n\u003cli data-source-line=\"22-22\"\u003eAccuracy: ±15 s\/month (radio-controlled), ±20 s\/month (battery)\u003c\/li\u003e\n\u003cli data-source-line=\"23-23\"\u003eDisplay: Digital LCD negative, LED Super Illuminator (1.5–4 s)\u003c\/li\u003e\n\u003cli data-source-line=\"24-24\"\u003eFunctions: 29-city world time, 1\/100-second stopwatch, 24-hour countdown, 5 alarms, hourly signal, perpetual calendar to 2099, 12\/24-hour format\u003c\/li\u003e\n\u003cli data-source-line=\"25-25\"\u003eSpecial: Triple-G-Resist (shock, magnetic, centrifugal), shock-resistant JIS Class 1\u003c\/li\u003e\n\u003cli data-source-line=\"26-26\"\u003eOrigin: Japan (JDM)\u003c\/li\u003e\n\u003cli data-source-line=\"27-27\"\u003eWarranty: 1 year\u003c\/li\u003e\n\u003cli data-source-line=\"28-28\"\u003eJAN: 4549526236289\u003c\/li\u003e\n\u003cli data-source-line=\"29-30\"\u003eRelease date: April 2020\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-source-line=\"31-32\"\u003e\u003cstrong\u003eKey Highlights\u003c\/strong\u003e: The GST-B100D-1AJF bridges military-tactical design with everyday wearability through its distinctive resin-steel hybrid construction. The 185 g weight and oversized 58.1 mm case project authority and durability, while Tough Solar + Multi-Band 6 ensure autonomous operation without battery maintenance. Triple-G-Resist engineering and 20 ATM water resistance make it suitable for construction sites, expeditions, and professional environments. The negative LCD and LED backlight provide exceptional low-light visibility, critical for fieldwork. Ideal for collectors seeking large-format G-SHOCK models that combine Japanese precision with rugged tactical aesthetics.\u003c\/p\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":47611491385599,"sku":"611921","price":64600.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/udetokei-watch_611921.jpg?v=1764514212","url":"https:\/\/japanheartfulstore.com\/products\/casio-g-steel-gst-b100d-1ajf-jdm-black-diamond-solar-radio-analog-digital-mens-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}