{"product_id":"casio-watch-g-shock-gr-b300ry-1a9jf-master-of-g-air-gravitymaster-master-japan-import-new","title":"Casio G-SHOCK GR-B300RY-1A9JF GRAVITYMASTER — Bluetooth Tough Solar Carbon Core Guard","description":"\u003ch2\u003eG-SHOCK GRAVITYMASTER GR-B300RY\u003c\/h2\u003e\u003cp\u003e\u003cem\u003eMaster of G — Air \/ Released February 2025\u003c\/em\u003e\u003c\/p\u003e\u003cp\u003eThe GR-B300RY-1A9JF is a GRAVITYMASTER model from G-SHOCK’s Master of G Air series. It features Carbon Core Guard structure, shock resistance, 200-meter water resistance, Tough Solar charging, and Bluetooth Smartphone Link through the CASIO WATCHES app.\u003c\/p\u003e\u003cp\u003eThis model includes world time, stopwatch, countdown timer, alarms, double LED light, and app-linked functions such as automatic time correction, easy watch setting, world time settings, Time \u0026amp; Place, and phone finder.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eGR-B300RY-1A9JF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase size\u003c\/td\u003e\n\u003ctd\u003e59 × 54.7 × 15.7 mm \/ 2.32 × 2.15 × 0.62 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e71 g \/ 2.5 oz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCase \/ bezel material\u003c\/td\u003e\n\u003ctd\u003eCarbon \/ Bio-based resin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBand\u003c\/td\u003e\n\u003ctd\u003eBio-based resin band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStructure\u003c\/td\u003e\n\u003ctd\u003eShock resistant, Carbon Core Guard structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWater resistance\u003c\/td\u003e\n\u003ctd\u003e200-meter water resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower supply\u003c\/td\u003e\n\u003ctd\u003eTough Solar solar charging system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMobile link\u003c\/td\u003e\n\u003ctd\u003eBluetooth Smartphone Link with compatible smartphones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eCASIO WATCHES app\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\u003eBand size range\u003c\/td\u003e\n\u003ctd\u003e145–215 mm \/ 5.7–8.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorld time\u003c\/td\u003e\n\u003ctd\u003e38 cities \/ 38 time zones + UTC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStopwatch\u003c\/td\u003e\n\u003ctd\u003e1\/100-second stopwatch, 24-hour capacity, split time\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTimer\u003c\/td\u003e\n\u003ctd\u003eCountdown timer, up to 60 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarms\u003c\/td\u003e\n\u003ctd\u003e5 daily alarms + hourly time signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight\u003c\/td\u003e\n\u003ctd\u003eDouble LED light, Super Illuminator\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery life\u003c\/td\u003e\n\u003ctd\u003eApprox. 5 months under normal use \/ approx. 18 months with power saving\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy\u003c\/td\u003e\n\u003ctd\u003eApprox. ±15 seconds per month when not connected to a smartphone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelease date\u003c\/td\u003e\n\u003ctd\u003eFebruary 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":57688582390063,"sku":"GR-B300RY-1A9JF","price":437.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0982\/9679\/1343\/files\/GR-B300RY-1A9.png?v=1780662420","url":"https:\/\/jtfwatches.com\/products\/casio-watch-g-shock-gr-b300ry-1a9jf-master-of-g-air-gravitymaster-master-japan-import-new","provider":"Japan Treasure Factory","version":"1.0","type":"link"}