{"product_id":"g-shock-gr-b300-1a4jf-master-of-g-gravitymaster-bluetooth-solar-watch","title":"Casio Men's G-Shock Master of G Series Gravitymaster GR-B300-1A4JF","description":"\u003ctable style=\"width:100%\"\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"font-weight:800; padding:5px;background:#d9d9d9;\"\u003eProduct Highlights\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003eThe GR-B300 GRAVITYMASTER features a shock-resistant structure called the \"Carbon Core Guard Structure,\" utilizing the characteristics of carbon material used in aircraft bodies (impact resistance, rigidity, and durability). By combining a case made of carbon fiber-reinforced resin with a seamless bezel inspired by next-generation aircraft, it achieves a powerful form as a GRAVITYMASTER. Designed with features like a Flight Log function for recording flight data, and Dual Time for displaying two time zones simultaneously, it captures the essence of the aviation world for aircraft and pilots. With intuitive readability in mind for crucial visibility during flights, it enhances functionality with large, three-dimensional hour markers and a metal bezel that accentuates the wide face. The use of a dual-coil motor in the 9 o'clock side's disc hand ensures precise movement and aesthetic appeal. Serving as both an alarm ON\/OFF function and a stopwatch, it also functions as a battery indicator. The design incorporates high-contrast point colors reminiscent of aircraft cockpits on the dial and buttons, while offering a functional dark color variation. The case, bezel, and band are made from biomass plastic to reduce environmental impact. By ensuring time accuracy required for aviation missions through Bluetooth® connectivity for time correction and pursuing practicality with solar power, the GRAVITYMASTER supports relentless challenges towards the extreme while embodying the world of professional aviation and the \"yearning for the sky.\"\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\" style=\"font-weight:800; padding:5px;background:#d9d9d9;\"\u003eProduct Overview\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003eFrom the G-SHOCK MASTER OF G series designed for professionals operating in harsh environments, comes the aviation-themed GRAVITYMASTER GR-B300.\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eGender\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eMen's\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eDial\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eMulti-needle analog\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eDrive System\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eTough Solar *Solar charging system\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eCase Shape\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eRound (Circular)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eCase Size\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003e54.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eCase Material\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eCarbon *Biomass plastic\/resin (Biomass plastic)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eGlass Material\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eInorganic glass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eBand Type\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eResin *Biomass plastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eBand Color\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003eBlack tones\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eWater Resistance\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003e20 bar water resistance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eOther Features\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003e\u003cul\u003e\n\u003cli\u003eDial Color: Black tones\u003c\/li\u003e\n\u003cli\u003eWeight: 71g\u003c\/li\u003e\n\u003cli\u003eCalendar Function: Full Auto Calendar\u003c\/li\u003e\n\u003cli\u003e\n\u003c\/li\u003e\n\u003cli\u003eBand: Resin band\u003c\/li\u003e\n\u003cli\u003eLength: 145-215mm\/28.6mm\u003c\/li\u003e\n\u003cli\u003eWeight: 71g\u003c\/li\u003e\n\u003cli\u003eShock-resistant structure\u003c\/li\u003e\n\u003cli\u003eTough Solar (Solar charging system)\u003c\/li\u003e\n\u003cli\u003e20 bar water resistance\u003c\/li\u003e\n\u003cli\u003eMobile Link function (Function linkage via Bluetooth® communication with compatible mobile phones)\u003c\/li\u003e\n\u003cli\u003eDual Time (with time swapping function between Home Time)\u003c\/li\u003e\n\u003cli\u003eStopwatch (1-second, 24-hour measurement with split)\u003c\/li\u003e\n\u003cli\u003eTimer (Set unit: 1 minute, maximum set: 24 hours, measurement in 1-second increments)\u003c\/li\u003e\n\u003cli\u003eElectronic alarm\u003c\/li\u003e\n\u003cli\u003eBattery indicator display\u003c\/li\u003e\n\u003cli\u003ePower-saving function (Stops the hand movement to save power after a certain period in the dark)\u003c\/li\u003e\n\u003cli\u003eFull Auto Calendar\u003c\/li\u003e\n\u003cli\u003eDate\/day display\u003c\/li\u003e\n\u003cli\u003eLED light (Super Illuminator with afterglow function)\u003c\/li\u003e\n\u003cli\u003eOperating time from full charge without solar generation: Approximately 5 months\/Power-saving mode: Approximately 18 months\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eRelease Date\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003e2024\/05\/17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border-bottom:1px solid #5d5d5d;font-weight:600;\"\u003eRetail Price\u003c\/td\u003e\n\u003ctd style=\"border-bottom:1px solid #ccc;\"\u003e¥ 49,500.00 JPY\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"CASIO","offers":[{"title":"Default Title","offer_id":41783224664148,"sku":"GR-B300-1A4JF","price":112415.0,"currency_code":"JPY","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0284\/7401\/5828\/files\/GR-B300-1A4JF_1_yodobashi.jpg?v=1750654882","url":"https:\/\/www.ippojapanwatch.com\/ja\/products\/g-shock-gr-b300-1a4jf-master-of-g-gravitymaster-bluetooth-solar-watch","provider":"IPPO JAPAN WATCH ","version":"1.0","type":"link"}