{"product_id":"casio-g-shock-ga-b2100-1a1jf-jdm-tough-solar-mobile-link-analog-digital-octagonal-all-black-mens-watch","title":"CASIO G-SHOCK GA-B2100-1A1JF 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 premium evolution of the iconic G-SHOCK 2100 series arrives in sophisticated all-black minimalist styling. The GA-B2100-1A1JF combines the legendary octagonal design heritage of the original DW-5600 with Bluetooth Smartphone Link connectivity and Tough Solar eco-charging technology. Released May 2022, this JDM domestic model delivers exceptional performance in an ultra-compact 52-gram package with 11.9 mm slim profile. Perfect for professionals, students, and collectors seeking timeless design merged with modern smart functionality and uncompromising durability.\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=\"14-34\"\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: All-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 7 months on full charge (active use); approximately 18 months in power-save mode\u003c\/li\u003e\n\u003cli data-source-line=\"22-22\"\u003e\n\u003cstrong\u003eAccuracy\u003c\/strong\u003e: ±15 seconds per month (when connected to smartphone via Bluetooth); ±15 seconds per month standard quartz when not connected\u003c\/li\u003e\n\u003cli data-source-line=\"23-23\"\u003e\n\u003cstrong\u003eFunctions\u003c\/strong\u003e: Analog-digital display with hand-shift feature, world time (38 cities + UTC), 1\/100-second stopwatch, countdown timer, 5 daily alarms, hourly time signal, full auto-calendar, date display, day-of-week display (English, Spanish, French, German, Italian, Russian), seconds-hand stop, power-saving function, battery indicator\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 dial with gray numerals and hand details\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 time correction (4x daily), phone finder, reminder setting (5 events), time \u0026amp; place log, world time switching, easy clock setting\u003c\/li\u003e\n\u003cli data-source-line=\"27-27\"\u003e\n\u003cstrong\u003eBacklight\u003c\/strong\u003e: Super Illuminator (high-brightness double LED with selectable afterglow duration 1.5 or 3 seconds)\u003c\/li\u003e\n\u003cli data-source-line=\"28-28\"\u003e\n\u003cstrong\u003eAdditional features\u003c\/strong\u003e: Neobrite lume on hands, operation sound on\/off switch, 12\/24-hour display switching\u003c\/li\u003e\n\u003cli data-source-line=\"29-29\"\u003e\n\u003cstrong\u003eOrigin\u003c\/strong\u003e: Japan (JDM Genuine – Domestic Model)\u003c\/li\u003e\n\u003cli data-source-line=\"30-30\"\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: 1-year manufacturer's warranty\u003c\/li\u003e\n\u003cli data-source-line=\"31-31\"\u003e\n\u003cstrong\u003eJAN Code\u003c\/strong\u003e: 4549526322846\u003c\/li\u003e\n\u003cli data-source-line=\"33-34\"\u003e\n\u003cstrong\u003eRelease date\u003c\/strong\u003e: May 2022\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-source-line=\"35-35\"\u003e\u003cstrong\u003eKey Highlights\u003c\/strong\u003e: This all-black GA-B2100-1A1JF variant delivers minimalist sophistication through carefully engineered aesthetic restraint. The sleek monochrome color scheme pairs seamlessly with business formal wear, casual streetwear, and outdoor adventure gear alike—a versatility rarely achieved in sport watches. At just 52 grams, the Carbon Core Guard shock-resistant structure ensures legendary G-SHOCK durability without compromising wearability; wearers frequently report forgetting they're wearing the watch due to exceptional comfort. Tough Solar technology eliminates battery replacement anxiety, while Bluetooth Smartphone Link provides automatic time correction up to four times daily—essential for international professionals and precision-focused users. The hand-shift feature elegantly solves potential LCD readability conflicts by retracting analog hands when needed. Gray numerals and Neobrite lume hands provide reliable visibility across diverse lighting conditions; Super Illuminator dual LED backlighting ensures clarity in complete darkness. World time functionality for 38 cities (plus UTC) with automatic daylight saving adjustment suits frequent travelers. 200-meter water resistance accommodates swimming, snorkeling, and water-based activities. Customer testimonials emphasize exceptional lightweight construction, refined minimalist design aesthetic, reliable Bluetooth time synchronization, eco-friendly solar power, and outstanding durability across professional and recreational environments. The all-black color scheme's sophisticated restraint appeals to mature professionals and design-conscious enthusiasts. Ideal as an entry-level G-SHOCK for younger users (students, gift recipients), professional business accessory, weekend sports companion, or versatile everyday timepiece. Strong value proposition combining iconic heritage design, cutting-edge smart connectivity, eco-friendly power, premium build quality, and versatile aesthetic appeal.\u003c\/p\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":47611500495103,"sku":"614553","price":23800.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0720\/0561\/5871\/files\/watchtown_4549526322846_1.jpg?v=1772243035","url":"https:\/\/japanheartfulstore.com\/products\/casio-g-shock-ga-b2100-1a1jf-jdm-tough-solar-mobile-link-analog-digital-octagonal-all-black-mens-watch","provider":"Japan Heartful Store","version":"1.0","type":"link"}