{"product_id":"casio-g-shock-ga-2100-1ajf-jdm-carbon-core-guard-black-analog-digital-mens-watch","title":"CASIO G-SHOCK GA-2100-1AJF JDM Carbon Core Guard Black Analog Digital Men's Watch","description":"\u003cp data-start=\"236\" data-end=\"737\"\u003e\u003cstrong data-start=\"236\" data-end=\"251\"\u003eDescription\u003c\/strong\u003e:\u003cbr data-start=\"252\" data-end=\"255\"\u003eThe GA-2100-1AJF marks a pivotal evolution in G-SHOCK design, introducing a slim, octagonal case inspired by the original DW-5000 while redefining the brand’s visual identity for a modern audience. Its carbon core guard structure significantly reduces thickness without compromising durability, creating a lighter and more refined wearing experience. The matte black finish emphasizes a minimalist, tactical aesthetic that resonates across both casual and professional environments.\u003c\/p\u003e\n\u003cp data-start=\"739\" data-end=\"1169\"\u003eFunctionally, the analog-digital hybrid layout enhances usability by combining intuitive time reading with digital precision. The carbon-reinforced case improves structural rigidity while maintaining comfort for long-term wear. Positioned as a versatile everyday model, the GA-2100-1AJF delivers a balance of contemporary design, durability, and practicality that has made it one of the most globally recognized G-SHOCK platforms.\u003c\/p\u003e\n\u003cp data-start=\"1171\" data-end=\"1194\"\u003e\u003cstrong data-start=\"1171\" data-end=\"1193\"\u003eKey Specifications\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-start=\"1195\" data-end=\"1895\"\u003e\n\u003cli data-start=\"1195\" data-end=\"1264\"\u003eCase: 48.5 × 45.4 × 11.8 mm, 51 g; carbon core guard + resin case\u003c\/li\u003e\n\u003cli data-start=\"1265\" data-end=\"1300\"\u003eBezel: Resin bezel, matte black\u003c\/li\u003e\n\u003cli data-start=\"1301\" data-end=\"1340\"\u003eBand: Resin band, black, pin buckle\u003c\/li\u003e\n\u003cli data-start=\"1341\" data-end=\"1368\"\u003eWater resistance: 200 m\u003c\/li\u003e\n\u003cli data-start=\"1369\" data-end=\"1418\"\u003eMovement: Quartz module 5611; battery-powered\u003c\/li\u003e\n\u003cli data-start=\"1419\" data-end=\"1458\"\u003eBattery\/Power: ~3 years (SR726W ×2)\u003c\/li\u003e\n\u003cli data-start=\"1459\" data-end=\"1484\"\u003eAccuracy: ±15 s\/month\u003c\/li\u003e\n\u003cli data-start=\"1485\" data-end=\"1533\"\u003eDisplay: Analog-digital hybrid, negative LCD\u003c\/li\u003e\n\u003cli data-start=\"1534\" data-end=\"1618\"\u003eFunctions: World time (31 zones), stopwatch, countdown timer, 5 alarms, calendar\u003c\/li\u003e\n\u003cli data-start=\"1619\" data-end=\"1686\"\u003eSpecial features: Shock resistance, carbon core guard structure\u003c\/li\u003e\n\u003cli data-start=\"1687\" data-end=\"1741\"\u003eIllumination: Double LED light (Super Illuminator)\u003c\/li\u003e\n\u003cli data-start=\"1742\" data-end=\"1771\"\u003eAdditional: Mineral glass\u003c\/li\u003e\n\u003cli data-start=\"1772\" data-end=\"1817\"\u003eOrigin: Japan domestic distribution (JDM)\u003c\/li\u003e\n\u003cli data-start=\"1818\" data-end=\"1838\"\u003eWarranty: 1 year\u003c\/li\u003e\n\u003cli data-start=\"1839\" data-end=\"1872\"\u003eJAN\/Model Code: 4549526241702\u003c\/li\u003e\n\u003cli data-start=\"1873\" data-end=\"1895\"\u003eRelease date: 2019\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1897\" data-end=\"2184\"\u003e\u003cstrong data-start=\"1897\" data-end=\"1915\"\u003eKey Highlights\u003c\/strong\u003e:\u003cbr data-start=\"1916\" data-end=\"1919\"\u003eThe GA-2100-1AJF is widely recognized as the foundation of the “CasiOak” movement, combining heritage inspiration with a distinctly modern silhouette. Its octagonal bezel pays subtle homage to the original G-SHOCK while introducing a slimmer, more wearable profile.\u003c\/p\u003e\n\u003cp data-start=\"2186\" data-end=\"2401\"\u003eThe carbon core guard structure represents a major technical advancement, reducing bulk while maintaining shock resistance. This allows for improved comfort without sacrificing the toughness expected from the brand.\u003c\/p\u003e\n\u003cp data-start=\"2403\" data-end=\"2574\"\u003eIts hybrid analog-digital display offers both immediate readability and functional versatility, making it suitable for a wide range of use cases—from daily wear to travel.\u003c\/p\u003e\n\u003cp data-start=\"2576\" data-end=\"2738\"\u003eAs one of the most accessible and design-forward G-SHOCK models, the GA-2100 continues to attract a broad audience, from first-time buyers to seasoned collectors.\u003c\/p\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":47611495350527,"sku":"613824","price":17900.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/udetokei-watch_613824.jpg?v=1764514237","url":"https:\/\/japanheartfulstore.com\/products\/casio-g-shock-ga-2100-1ajf-jdm-carbon-core-guard-black-analog-digital-mens-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}