{"product_id":"casio-g-shock-gm-b2100bt-1ajf-full-metal-bluetooth-tough-solar-black-bezel","title":"Casio G-SHOCK GM-B2100BT-1AJF FULL METAL — Bluetooth Tough Solar Black Bezel","description":"\u003ch2\u003eG-SHOCK GM-B2100BT — FULL METAL, Black Bezel\u003c\/h2\u003e\n\u003cp\u003e\u003cem\u003eFULL METAL \/ 2100 Series \/ Made in Japan \/ Released October 2025\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe GM-B2100BT carries on the octagonal form of the original G-SHOCK DW-5000C in full metal form. Black stands out against silver to emphasize G-SHOCK's signature toughness, in a monotone design that pairs easily with a wide range of styles. The top bezel gets a hairline finish, and the indices are silver vapor-deposited for improved legibility. The stainless steel bezel is shaped three-dimensionally through forging, cutting, and polishing, and a fine resin buffer is set between the bezel and case to deliver full-metal shock resistance. The metal band pieces carry a dimpled texture that carries forward the resin band design of the original model. Made at Yamagata Casio — the mother factory that created the original G-SHOCK — the GM-B2100BT also uses an airtight screw-back case.\u003c\/p\u003e\n\n\u003cp\u003eBluetooth connects to the CASIO WATCHES app for automatic time correction, world time for approximately 300 cities, Time \u0026amp; Place location logging, reminders, and phone finder, all backed by stable Tough Solar power.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGM-B2100BT-1AJF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSeries\u003c\/td\u003e\n\u003ctd\u003eG-SHOCK FULL METAL \/ 2100 Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase size\u003c\/td\u003e\n\u003ctd\u003e49.8 × 44.4 × 12.8 mm \/ 1.96 × 1.75 × 0.50 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e165 g \/ 5.8 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase \/ bezel material\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBand\u003c\/td\u003e\n\u003ctd\u003eMetal band (solid stainless steel), one-push tri-fold clasp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGlass\u003c\/td\u003e\n\u003ctd\u003eMineral glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater resistance\u003c\/td\u003e\n\u003ctd\u003e20-bar (200-meter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructure\u003c\/td\u003e\n\u003ctd\u003eShock resistant\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTime correction\u003c\/td\u003e\n\u003ctd\u003eBluetooth (auto time correction via smartphone)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower source\u003c\/td\u003e\n\u003ctd\u003eTough Solar\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase back\u003c\/td\u003e\n\u003ctd\u003eScrew-back\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurface treatment\u003c\/td\u003e\n\u003ctd\u003eBlack IP (bezel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMobile Link \/ App\u003c\/td\u003e\n\u003ctd\u003eCASIO WATCHES app — auto time correction, easy watch setting, world time (approx. 300 cities), Time \u0026amp; Place, reminders, phone finder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFunctions\u003c\/td\u003e\n\u003ctd\u003eWorld time (38 cities \/ 38 time zones + UTC, auto DST, home city swap), Stopwatch (1\/100-sec under 1 hr, 1-sec over 1 hr, 24-hr, lap\/split), Timer (1-sec unit, max 60 min), 5 daily alarms + hourly time signal, Double LED light (dial + LCD backlight, Super Illuminator with afterglow, switchable duration), Full auto calendar, Operation sound on\/off, Power saving function, Battery indicator, Hand retreat function, 12\/24-hour format, Date display (month\/day swap), Day-of-week display (6 languages)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003e~7 months (with functions) \/ ~18 months (power saving)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003eAverage monthly deviation ±15 seconds (standard quartz accuracy when Bluetooth sync unavailable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBand size\u003c\/td\u003e\n\u003ctd\u003e150–205 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelease date\u003c\/td\u003e\n\u003ctd\u003eOctober 2025\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Japan Treasure Factory","offers":[{"title":"Default Title","offer_id":58363796848943,"sku":"GM-B2100BT-1AJF","price":536.4,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/9679\/1343\/files\/GM-B2100BT-1AJF-01.png?v=1787584121","url":"https:\/\/jtfwatches.com\/products\/casio-g-shock-gm-b2100bt-1ajf-full-metal-bluetooth-tough-solar-black-bezel","provider":"Japan Treasure Factory","version":"1.0","type":"link"}