{"product_id":"casio-g-shock-ga-b2100-1ajf-jdm-tough-solar-mobile-link-analog-digital-octagonal-all-black-mens-watch","title":"CASIO G-SHOCK GA-B2100-1AJF JDM Tough Solar Mobile Link Analog-Digital Octagonal All-Black Men's Watch","description":"\u003cp data-source-line=\"11-11\"\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e: The iconic G-SHOCK legend reimagined with modern smart connectivity and eco-friendly power. Inheriting the distinctive octagonal design DNA of the original DW-5600, the GA-B2100-1AJF delivers premium features in an ultra-light 52-gram package: Tough Solar eco-charging, Bluetooth Smartphone Link functionality, and Carbon Core Guard shock-resistant construction. This all-black JDM timepiece epitomizes minimalist elegance combined with advanced technology, making it the perfect companion for professionals, outdoor enthusiasts, and watch collectors worldwide.\u003c\/p\u003e\n\u003cp data-source-line=\"13-13\"\u003e\u003cstrong\u003eKey Specifications\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul data-source-line=\"14-32\"\u003e\n\u003cli data-source-line=\"14-14\"\u003e\n\u003cstrong\u003eCase size\u003c\/strong\u003e: 48.5 mm × 45.4 mm × 11.9 mm (W × D × H)\u003c\/li\u003e\n\u003cli data-source-line=\"15-15\"\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: ~52 g\u003c\/li\u003e\n\u003cli data-source-line=\"16-16\"\u003e\n\u003cstrong\u003eCase material\u003c\/strong\u003e: Carbon-core resin with Carbon Core Guard shock-resistant structure\u003c\/li\u003e\n\u003cli data-source-line=\"17-17\"\u003e\n\u003cstrong\u003eBand\u003c\/strong\u003e: Black resin, adjustable 145–215 mm with three-fold clasp\u003c\/li\u003e\n\u003cli data-source-line=\"18-18\"\u003e\n\u003cstrong\u003eWater resistance\u003c\/strong\u003e: 200 m (20 ATM)\u003c\/li\u003e\n\u003cli data-source-line=\"19-19\"\u003e\n\u003cstrong\u003eMovement\u003c\/strong\u003e: Quartz solar calibre 5689\u003c\/li\u003e\n\u003cli data-source-line=\"20-20\"\u003e\n\u003cstrong\u003ePower source\u003c\/strong\u003e: Tough Solar (eco-friendly solar charging system)\u003c\/li\u003e\n\u003cli data-source-line=\"21-21\"\u003e\n\u003cstrong\u003eBattery life\u003c\/strong\u003e: Approximately 9 months on full charge; perpetual in power-save mode\u003c\/li\u003e\n\u003cli data-source-line=\"22-22\"\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: ±30 seconds per month (solar quartz)\u003c\/li\u003e\n\u003cli data-source-line=\"23-23\"\u003e\n\u003cstrong\u003eFunctions\u003c\/strong\u003e: Analog-digital display, world time (38 cities), 1\/100-second stopwatch, countdown timer, 5 daily alarms, date display, seconds-hand stop, power reserve indicator, hand-shift feature\u003c\/li\u003e\n\u003cli data-source-line=\"24-24\"\u003e\n\u003cstrong\u003eDisplay\u003c\/strong\u003e: Dual-layer LCD with enhanced texture, all-black monochrome dial with white numerals and red accent\u003c\/li\u003e\n\u003cli data-source-line=\"25-25\"\u003e\n\u003cstrong\u003eCrystal\u003c\/strong\u003e: Mineral glass\u003c\/li\u003e\n\u003cli data-source-line=\"26-26\"\u003e\n\u003cstrong\u003eBluetooth\u003c\/strong\u003e: Smartphone Link (Mobile Link) via CASIO Watches app—automatic 4x daily time adjustment, phone finder, reminder setting (5 events), time \u0026amp; place log\u003c\/li\u003e\n\u003cli data-source-line=\"27-27\"\u003e\n\u003cstrong\u003eBacklight\u003c\/strong\u003e: Super Illuminator (high-brightness double LED)\u003c\/li\u003e\n\u003cli data-source-line=\"28-28\"\u003e\n\u003cstrong\u003eOrigin\u003c\/strong\u003e: Japan (JDM Genuine – Domestic Model)\u003c\/li\u003e\n\u003cli data-source-line=\"29-29\"\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 1-year manufacturer's warranty\u003c\/li\u003e\n\u003cli data-source-line=\"30-30\"\u003e\n\u003cstrong\u003eJAN Code\u003c\/strong\u003e: 4549526322891\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-source-line=\"33-33\"\u003e\u003cstrong\u003eKey Highlights\u003c\/strong\u003e: This GA-B2100-1AJF model represents the quintessential expression of modern G-SHOCK engineering: timeless octagonal design merged with cutting-edge smart functionality. At just 52 grams with 11.9 mm thickness, the slim profile offers exceptional wearability across formal business settings, outdoor adventures, and daily casual environments—an achievement that balances the iconic G-SHOCK geometry with contemporary comfort expectations. Tough Solar charging technology eliminates battery replacement concerns, while Bluetooth Smartphone Link ensures automatic time synchronization up to four times daily, ideal for precision-dependent professionals. The Carbon Core Guard structure delivers legendary G-SHOCK durability without bulk. All-black monochrome styling with white numerals and red accent provides sophisticated versatility; the dual-layer dial construction adds visual depth and professional aesthetic. Super Illuminator dual LED backlight ensures readability in complete darkness. 200-meter water resistance accommodates swimming, snorkeling, and aquatic activities. Customer testimonials consistently highlight lightweight comfort, exceptional readability, refined design quality, and strong value proposition. Suitable as an educational gift, professional accessory, or versatile everyday wear. The combination of heritage design, eco-friendly power, smart features, and proven G-SHOCK durability positions this as an outstanding value investment in both functionality and timeless style.\u003c\/p\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":47611500134655,"sku":"614554","price":26000.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/udetokei-watch_614554.jpg?v=1764514267","url":"https:\/\/japanheartfulstore.com\/products\/casio-g-shock-ga-b2100-1ajf-jdm-tough-solar-mobile-link-analog-digital-octagonal-all-black-mens-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}