{"product_id":"casio-g-shock-ga-2100-1a1jf-jdm-carbon-core-guard-all-black-analog-digital-mens-watch","title":"CASIO G-SHOCK GA-2100-1A1JF JDM Carbon Core Guard All Black Analog Digital Men's Watch","description":"\u003cdiv\u003e\n\u003cp data-start=\"302\" data-end=\"821\"\u003e\u003cstrong data-start=\"302\" data-end=\"317\"\u003eDescription\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cp data-start=\"302\" data-end=\"821\"\u003eThe GA-2100-1A1JF represents the most refined expression of the iconic octagonal G-SHOCK design, executed in a fully monochromatic “all-black” configuration. Drawing inspiration from the original DW-5000, this model translates heritage geometry into a modern, low-visibility aesthetic that emphasizes cohesion and minimalism. The dial, hands, and case are unified in tone, creating a stealth profile that reduces visual distraction while maintaining the unmistakable identity of the GA-2100 platform.\u003c\/p\u003e\n\u003cp data-start=\"823\" data-end=\"1253\"\u003eBuilt with the Carbon Core Guard structure, the case achieves a slim and lightweight profile without compromising durability. This structural innovation enhances everyday wearability while preserving G-SHOCK’s signature shock resistance. The analog-digital display balances intuitive readability with functional versatility, making it suitable for a wide range of environments—from urban daily wear to travel and professional use.\u003c\/p\u003e\n\u003chr data-start=\"1255\" data-end=\"1258\"\u003e\n\u003cp data-start=\"1260\" data-end=\"1283\"\u003e\u003cstrong data-start=\"1260\" data-end=\"1282\"\u003eKey Specifications\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"1284\" data-end=\"2078\"\u003e\n\u003cli data-start=\"1284\" data-end=\"1361\"\u003eCase: 48.5 × 45.4 × 11.8 mm, approx. 51 g; carbon core guard + resin case\u003c\/li\u003e\n\u003cli data-start=\"1362\" data-end=\"1408\"\u003eBezel: Resin bezel, matte all-black finish\u003c\/li\u003e\n\u003cli data-start=\"1409\" data-end=\"1448\"\u003eBand: Resin band, black, pin buckle\u003c\/li\u003e\n\u003cli data-start=\"1449\" data-end=\"1485\"\u003eWater resistance: 200 m (20 ATM)\u003c\/li\u003e\n\u003cli data-start=\"1486\" data-end=\"1518\"\u003eMovement: Quartz module 5611\u003c\/li\u003e\n\u003cli data-start=\"1519\" data-end=\"1565\"\u003eBattery\/Power: Approx. 3 years (SR726W ×2)\u003c\/li\u003e\n\u003cli data-start=\"1566\" data-end=\"1597\"\u003eAccuracy: ±15 seconds\/month\u003c\/li\u003e\n\u003cli data-start=\"1598\" data-end=\"1654\"\u003eDisplay: Analog-digital, negative LCD (stealth dial)\u003c\/li\u003e\n\u003cli data-start=\"1655\" data-end=\"1780\"\u003eFunctions: World time (31 time zones), 1\/100-sec stopwatch, countdown timer, 5 daily alarms, full auto calendar (to 2099)\u003c\/li\u003e\n\u003cli data-start=\"1781\" data-end=\"1848\"\u003eSpecial features: Shock resistance, Carbon Core Guard structure\u003c\/li\u003e\n\u003cli data-start=\"1849\" data-end=\"1924\"\u003eIllumination: Double LED light (Super Illuminator, selectable duration)\u003c\/li\u003e\n\u003cli data-start=\"1925\" data-end=\"1954\"\u003eAdditional: Mineral glass\u003c\/li\u003e\n\u003cli data-start=\"1955\" data-end=\"1978\"\u003eOrigin: Japan (JDM)\u003c\/li\u003e\n\u003cli data-start=\"1979\" data-end=\"2021\"\u003eWarranty: 1 year manufacturer warranty\u003c\/li\u003e\n\u003cli data-start=\"2022\" data-end=\"2055\"\u003eJAN\/Model Code: 4549526241726\u003c\/li\u003e\n\u003cli data-start=\"2056\" data-end=\"2078\"\u003eRelease date: 2019\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"2080\" data-end=\"2083\"\u003e\n\u003cp data-start=\"2085\" data-end=\"2436\"\u003e\u003cstrong data-start=\"2085\" data-end=\"2103\"\u003eKey Highlights\u003c\/strong\u003e:\u003cbr data-start=\"2104\" data-end=\"2107\"\u003eThe GA-2100-1A1JF stands as one of the most sought-after variants within the CasiOak lineup, defined by its fully blacked-out execution that prioritizes form, subtlety, and cohesion. This monochromatic approach enhances its versatility, allowing it to transition seamlessly between casual, tactical, and fashion-forward contexts.\u003c\/p\u003e\n\u003cp data-start=\"2438\" data-end=\"2745\"\u003eThe Carbon Core Guard structure delivers a rare balance between reduced thickness and structural durability, making it one of the most wearable G-SHOCK models for extended daily use. Its lightweight build ensures comfort, while the shock-resistant construction maintains reliability in demanding conditions.\u003c\/p\u003e\n\u003cp data-start=\"2747\" data-end=\"2999\"\u003eFrom a functional standpoint, the analog-digital layout provides both immediate readability and advanced features, including world time and multi-alarm capability. This makes it an ideal choice for users who require both practicality and modern design.\u003c\/p\u003e\n\u003cp data-start=\"3001\" data-end=\"3239\"\u003eAs a global bestseller within the GA-2100 series, the all-black variant continues to attract a wide audience—from first-time buyers to experienced collectors—thanks to its clean aesthetic, proven durability, and strong market recognition.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Casio","offers":[{"title":"Default Title","offer_id":47611495809279,"sku":"GA-2100-1A1JF","price":17600.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/udetokei-watch_613823.jpg?v=1764514239","url":"https:\/\/japanheartfulstore.com\/products\/casio-g-shock-ga-2100-1a1jf-jdm-carbon-core-guard-all-black-analog-digital-mens-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}