{"title":"G-Shock GA2100 Watches","description":"\u003cp\u003eCompare verified G-Shock GA2100-family watches, including standard resin, solar-connected and metal-covered octagonal models. Use the product grid for current Amazon listings, then continue below for focused comparisons.\u003c\/p\u003e\n\u003c!-- collection-guide --\u003e\n\u003cdiv class=\"collection-description\"\u003e\n\u003ch2\u003eHow to Choose a G-Shock GA2100-Family Watch\u003c\/h2\u003e\n\u003cp\u003eThe GA2100 family is defined by its slim octagonal analog-digital format, but the exact experience changes across standard GA2100, Bluetooth-equipped GAB2100 and metal-covered GM or GBM variants. Begin with power source, connectivity, case materials and bracelet or resin-band preference.\u003c\/p\u003e\n\u003ch3\u003eStandard, Solar-Connected and Metal Routes\u003c\/h3\u003e\n\u003cp\u003eStandard GA2100 models prioritize the familiar resin format. GAB2100 references add light-powered charging and connected setup features where stated. GM2100, GM2110 and GBM2100 references shift toward metal-covered cases or bracelets. Always confirm the exact reference because features are not interchangeable across the family.\u003c\/p\u003e\n\u003ch3\u003eFit and Color\u003c\/h3\u003e\n\u003cp\u003eCompare case dimensions, weight, display contrast and band construction rather than relying on the shared octagonal outline. Dial accents and negative displays can affect readability, while metal variants usually feel different on the wrist from resin versions.\u003c\/p\u003e\n\u003cp\u003e\u003csmall\u003eAs an Amazon Associate, we may earn from qualifying purchases.\u003c\/small\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/amzn.to\/4hsG1bt\" target=\"_blank\" rel=\"nofollow sponsored\"\u003eBrowse G-Shock Watches on Amazon\u003c\/a\u003e\u003c\/p\u003e\n\u003csection class=\"collection-supporting-guides\" aria-labelledby=\"ga2100-library\"\u003e\n\u003ch2 id=\"ga2100-library\"\u003eG-Shock GA2100 Research Library\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/casio-g-shock-ga2100-family-buying-guide-standard-solar-and-metal\"\u003eG-Shock GA2100 Family Buying Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/casio-ga-2100-1a1er-vs-gab2100-1a-standard-or-solar-connected\"\u003eGA-2100-1A1ER vs GAB2100-1A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/g-shock-gab2100-1a-vs-gbm2100-1a-resin-classic-or-g-steel-upgrade\"\u003eGAB2100-1A vs GBM2100-1A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/g-shock-gm2100-1a-vs-gm2110d-2a-resin-band-or-steel-bracelet\"\u003eGM2100-1A vs GM2110D-2A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/g-shock-gm2110d-2a-vs-gm2110d-2b-sky-blue-or-navy-blue\"\u003eGM2110D-2A vs GM2110D-2B\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/g-shock-ga2100rw-1a-vs-ga2100hds-7a-iridescent-or-hidden-glow\"\u003eGA2100RW-1A vs GA2100HDS-7A\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/blogs\/buying-guides\/g-shock-gmap2100st-7a-vs-gma-s120mf-4acr-white-gold-or-pink\"\u003eGMAP2100ST-7A vs GMA-S120MF-4ACR\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eReturn to \u003ca href=\"\/collections\/g-shock-watches\"\u003eG-Shock Watches\u003c\/a\u003e or the broader \u003ca href=\"\/collections\/casio-watches\"\u003eCasio Watches authority hub\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","products":[{"product_id":"g-shock-casio-analog-digital-tough-solar-connected-black-watch-gab2100-1a","title":"G-Shock Casio Analog-Digital Tough Solar Connected Black Watch | GAB2100-1A","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e G-Shock\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUpgrade the retro look you love with the octagonal Casio G-Shock GA-2100 line, which inherits the design concept of the very first G-Shock, but now with Smartphone Link and Tough Solar power\u003c\/li\u003e\n\u003cli\u003eBold in design, this model features a black carbon fiber-reinforced interior case and matching black resin band\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eUPC:\u003c\/b\u003e 889232322865\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0889232322865\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 8.0 x 5.0 x 8.0 inches\u003c\/p\u003e","brand":"G-Shock","offers":[{"title":"Default Title","offer_id":53735083999546,"sku":"B0B5VS1PFH","price":142.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41UJxWEVQLL._SL500.jpg?v=1784090303"},{"product_id":"casio-reloj-analog-digital-g-shock-trend-ga-2100-1a3er-49mm-black-black-taglia-unica-ga-2100-1a3er-amzuk","title":"Casio RELOJ Analog Digital G-Shock Trend GA-2100-1A3ER 49mm Black, Black, Taglia unica, GA-2100-1A3ER-AMZUK","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e Casio\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBlack\u003c\/li\u003e\n\u003cli\u003eOne Size\u003c\/li\u003e\n\u003cli\u003e2 Year International Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eRelease Date:\u003c\/b\u003e 2023-10-24T00:00:01Z\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 4549526319280\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 15.7 x 18.5 x 9.1 inches\u003c\/p\u003e","brand":"Casio","offers":[{"title":"Default Title","offer_id":53785568903482,"sku":"B09T6QL236","price":105.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41DNB7sB1cL._SL500.jpg?v=1784843742"},{"product_id":"g-shock-ga-2100-1a1-black-one-size","title":"G-Shock GA-2100-1A1 Black One Size","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e G-Shock\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e{\"bullet_point1\":\"clip-on\"}\u003c\/li\u003e\n\u003cli\u003eThe rugged watch's 45.4mm case is expertly crafted from fine resin mixed with carbon fiber, an innovative composition that is lighter and more durable than resin\u003c\/li\u003e\n\u003cli\u003eThe smooth black dial features an analog-digital display and double LED light feature, for easy visibility in the dark\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eUPC:\u003c\/b\u003e 889232241630\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0889232241630\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 5.0 x 5.0 x 5.0 inches\u003c\/p\u003e","brand":"G-Shock","offers":[{"title":"Default Title","offer_id":53785589416250,"sku":"B07WJFS6LH","price":94.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41eEvBTHCeL._SL500.jpg?v=1784844254"},{"product_id":"g-shock-casio-metal-covered-octagonal-black-resin-band-watch-gm2100-1a","title":"G-Shock Casio Metal Covered Octagonal Black Resin Band Watch GM2100-1A","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e G-Shock\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e black\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eForged in stainless steel with rounded hairline finish, the strong bezel says super style all the way\u003c\/li\u003e\n\u003cli\u003eSuper LED Light\u003c\/li\u003e\n\u003cli\u003eShock Resistant\u003c\/li\u003e\n\u003cli\u003eMineral Glass\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eWarranty:\u003c\/b\u003e Warranty\u003c\/p\u003e\u003cp\u003e\u003cb\u003eUPC:\u003c\/b\u003e 889232307015\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0889232307015\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 8.0 x 5.0 x 8.0 inches\u003c\/p\u003e","brand":"G-Shock","offers":[{"title":"Default Title","offer_id":53785589514554,"sku":"B09414PK9B","price":187.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41T6mXW3QDL._SL500.jpg?v=1784844257"},{"product_id":"g-shock-casio-g-steel-solar-connected-black-dial-black-resin-strap-watch-gbm2100-1a","title":"G-Shock Casio G-Steel Solar Connected Black Dial Black Resin Strap Watch - GBM2100-1A","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e Casio\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\u003cli\u003eThe new Metal Covered 2100 in classic black and silver. Boasting Bluetooth and Tough Solar technology.\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eUPC:\u003c\/b\u003e 889232377797\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0889232377797\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 4.4 x 4.3 x 3.8 inches\u003c\/p\u003e","brand":"Casio","offers":[{"title":"Default Title","offer_id":53785590464826,"sku":"B0D52NPL91","price":235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41-Y5shQlqL._SL500.jpg?v=1784844281"},{"product_id":"casio-g-shock-carbon-core-guard-ga-2100-4ajf-mens-japan-import","title":"Casio G-shock Carbon Core Guard Ga-2100-4ajf Mens Japan Import","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e G-Shock\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e31 time zones of the world (48 cities + Coordinated World Time), on\/off, city time change, global time change\u003c\/li\u003e\n\u003cli\u003eCase Material: Carbon\/Resin\u003c\/li\u003e\n\u003cli\u003eResin Bracelet\u003c\/li\u003e\n\u003cli\u003eShock resistant\u003c\/li\u003e\n\u003cli\u003eThis G-Shock Ga-2100-4ajf watch is a JDM (Japanese Domestic Market) watch model.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 4549526241765\u003c\/p\u003e","brand":"G-Shock","offers":[{"title":"Default Title","offer_id":53785590595898,"sku":"B07VHSZ17W","price":125.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41O6QRLBSSL._SL500.jpg?v=1784844284"},{"product_id":"g-shock-ga2100-7a-white-one-size","title":"G-Shock GA2100-7A White One Size","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e G-Shock\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e White\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFrom Casio, this rugged G-Shock Carbon Core Guard Analog-Digital watch will toughen up your collection\u003c\/li\u003e\n\u003cli\u003eThe case is made of fine resin embedded with carbon fibers, making the thin, lightweight, and simple design configuration of this model possible\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eUPC:\u003c\/b\u003e 889232298061\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0889232298061\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 8.0 x 5.0 x 5.0 inches\u003c\/p\u003e","brand":"G-Shock","offers":[{"title":"Default Title","offer_id":53785591021882,"sku":"B092JMP4M8","price":108.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/31LAdvWF-bL._SL500.jpg?v=1784844295"},{"product_id":"casio-unisexs-quartz-watch-ga-2100-1a1er","title":"Casio Unisex's Quartz Watch GA-2100-1A1ER","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e Casio\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBlack silicone strap with silver pin buckle\u003c\/li\u003e\n\u003cli\u003eBlack plastic case with rubber coating, a diameter of 45 mm, grey hands and black indices\u003c\/li\u003e\n\u003cli\u003eDigital date display, stopwatch function, countdown timer, automatic calendar with date and day of the week\u003c\/li\u003e\n\u003cli\u003eThe watch has a water resistance of 20 bar (the watch is suitable for snorkelling and device-free free diving at low depth)\u003c\/li\u003e\n\u003cli\u003eThe analogue digital watch is powered by a Japanese quartz movement\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eRelease Date:\u003c\/b\u003e 2019-11-15T00:00:01Z\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 4549526241659\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 3.9 x 3.9 x 2.0 inches\u003c\/p\u003e\u003cp\u003e\u003cb\u003eLanguages:\u003c\/b\u003e English\u003c\/p\u003e","brand":"Casio","offers":[{"title":"Default Title","offer_id":53785591578938,"sku":"B07WGJ1JNW","price":110.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41u1mUgIbrL._SL500.jpg?v=1784844308"},{"product_id":"g-shock-ga2100-1a2-neon-accent-watch-blue","title":"G-Shock GA2100-1A2 Neon Accent Watch, Blue","description":"\u003cp\u003e\u003cb\u003eBrand:\u003c\/b\u003e G-Shock\u003c\/p\u003e\u003cp\u003e\u003cb\u003eColor:\u003c\/b\u003e Blue\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e \u003c\/p\u003e\u003cul\u003e\u003cli\u003eG-Shock GA2100 Neon Accent Black\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cb\u003eUPC:\u003c\/b\u003e 889232319216\u003c\/p\u003e\u003cp\u003e\u003cb\u003eEAN:\u003c\/b\u003e 0889232319216\u003c\/p\u003e\u003cp\u003e\u003cb\u003ePackage Dimensions:\u003c\/b\u003e 12.0 x 5.0 x 12.0 inches\u003c\/p\u003e","brand":"G-Shock","offers":[{"title":"Default Title","offer_id":53785592594746,"sku":"B09SM52RC3","price":107.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/files\/41a0VUxFVuL._SL500.jpg?v=1784844334"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/5962\/5274\/collections\/g-shock-watches_7df9de54-329a-4204-aade-618200cd7b30.png?v=1789221194","url":"https:\/\/thewatchcatalog.com\/collections\/g-shock-ga2100-watches.oembed","provider":"TheWatchCatalog","version":"1.0","type":"link"}