{"product_id":"casio-g-shock-2100-dual-display-bluetooth-solar-watch-ga-b2100-1aer","title":"Casio G-SHOCK 2100 Dual Display Bluetooth Solar Watch (GA-B2100-1AER)","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\n\u003cp\u003e\nThe Casio G-SHOCK GA-B2100-1A combines the iconic octagonal design of the G-SHOCK 2100 Series with advanced solar-powered technology and Bluetooth® smartphone connectivity. Building on the popularity of the original GA-2100, this upgraded analogue-digital watch introduces Tough Solar charging and Smartphone Link functionality while retaining the slim profile, lightweight construction and legendary durability that define the G-SHOCK range.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFeaturing a distinctive black resin case with contrasting grey dial details, the GA-B2100-1A delivers a versatile appearance suited to professional environments, outdoor activities and everyday wear. Its Carbon Core Guard construction provides exceptional shock resistance, while 200-metre water resistance, dual LED illumination and precision timekeeping ensure dependable performance in demanding conditions. Weighing just 52 g and measuring only 11.9 mm thick, it offers impressive functionality without unnecessary bulk.\n\u003c\/p\u003e\n\n\u003ch6\u003eKey Features\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003eIconic octagonal G-SHOCK 2100 Series design\u003c\/li\u003e\n\u003cli\u003eTough Solar technology converts natural and artificial light into power\u003c\/li\u003e\n\u003cli\u003eBluetooth® Smartphone Link with automatic time adjustment\u003c\/li\u003e\n\u003cli\u003eCarbon Core Guard structure for lightweight shock resistance\u003c\/li\u003e\n\u003cli\u003e200-metre water resistance for demanding everyday and outdoor use\u003c\/li\u003e\n\u003cli\u003eAnalogue-digital display with distinctive dual-layer dial\u003c\/li\u003e\n\u003cli\u003eDouble LED Super Illuminator for improved visibility in darkness\u003c\/li\u003e\n\u003cli\u003eWorld Time covering 38 time zones, with additional cities available through the smartphone app\u003c\/li\u003e\n\u003cli\u003e1\/100-second stopwatch and 60-minute countdown timer\u003c\/li\u003e\n\u003cli\u003eFive daily alarms and hourly time signal\u003c\/li\u003e\n\u003cli\u003eHand Shift function moves the hands to reveal the digital display\u003c\/li\u003e\n\u003cli\u003ePower Saving mode and battery level indicator\u003c\/li\u003e\n\u003cli\u003eLightweight 52 g construction for comfortable everyday wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eSpecifications\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GA-B2100-1A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e G-SHOCK 2100 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Analogue and digital\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Dimensions:\u003c\/strong\u003e 48.5 × 45.4 × 11.9 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 52 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase \u0026amp; Bezel Material:\u003c\/strong\u003e Carbon \/ resin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrap:\u003c\/strong\u003e Resin band\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Wrist Size:\u003c\/strong\u003e 145–215 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGlass:\u003c\/strong\u003e Mineral glass\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Shock Resistant, Carbon Core Guard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater Resistance:\u003c\/strong\u003e 200 metres (20 bar)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source:\u003c\/strong\u003e Tough Solar rechargeable battery\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e Bluetooth® Smartphone Link\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible App:\u003c\/strong\u003e CASIO WATCHES\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimekeeping Accuracy:\u003c\/strong\u003e ±15 seconds per month without Smartphone Link\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Operating Time:\u003c\/strong\u003e Approximately 7 months after full charge without further light exposure under normal use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Saving Battery Life:\u003c\/strong\u003e Approximately 18 months after full charge when stored in darkness with Power Saving enabled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e Neobrite luminous coating, Hand Shift and battery level indicator\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eCarbon Core Guard Protection\u003c\/h6\u003e\n\u003cp\u003e\nAt the heart of the GA-B2100-1A is Casio's advanced Carbon Core Guard structure, which uses carbon fibre-reinforced resin to protect the watch module against shocks and impacts. This lightweight yet robust construction allows the watch to maintain a slim, comfortable profile without compromising the durability expected from G-SHOCK.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe distinctive octagonal bezel takes inspiration from the original G-SHOCK design philosophy, combining a recognisable appearance with practical protection. Its resin strap provides flexibility and comfort during prolonged wear, while the mineral glass protects the dial against everyday wear.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWith 200-metre water resistance, the watch is suitable for swimming, water-based activities and demanding outdoor conditions, making it a dependable choice for users who require a versatile timepiece capable of handling both work and leisure.\n\u003c\/p\u003e\n\n\u003ch6\u003eTough Solar Power\u003c\/h6\u003e\n\u003cp\u003e\nThe GA-B2100-1A features Casio's Tough Solar technology, which converts natural and artificial light into electrical energy to power the watch. This eliminates the need for frequent conventional battery replacements and provides reliable operation throughout everyday use.\n\u003c\/p\u003e\n\n\u003cp\u003e\nAn integrated rechargeable battery stores energy for use in low-light conditions, delivering approximately seven months of normal operation after a full charge without additional light exposure. When Power Saving mode is enabled, the watch can operate for approximately 18 months in darkness after a full charge.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA battery level indicator makes it easy to monitor the remaining charge, while the Power Saving function automatically reduces energy consumption when the watch is left in darkness for extended periods.\n\u003c\/p\u003e\n\n\u003ch6\u003eBluetooth® Smartphone Link\u003c\/h6\u003e\n\u003cp\u003e\nBluetooth® connectivity allows the GA-B2100-1A to connect to a compatible smartphone using the CASIO WATCHES app. Once paired, the watch can automatically synchronise its time with the smartphone, helping maintain accurate timekeeping without the need for regular manual adjustment.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe Smartphone Link system also makes it easier to configure watch settings, manage alarms, select World Time locations and access additional functionality through a familiar smartphone interface.\n\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic Time Adjustment:\u003c\/strong\u003e Synchronises the watch with a connected smartphone up to four times per day.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEasy Watch Settings:\u003c\/strong\u003e Configure alarms, timers and other settings through the CASIO WATCHES app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorld Time:\u003c\/strong\u003e Access approximately 300 cities through the smartphone app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime \u0026amp; Place:\u003c\/strong\u003e Record the current time and location using the connected smartphone.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReminder Function:\u003c\/strong\u003e Receive reminders for up to five events configured in the app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhone Finder:\u003c\/strong\u003e Activate an audible alert on a connected smartphone to help locate it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHome Time \/ World Time Switching:\u003c\/strong\u003e Conveniently swap between local and international time settings.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eWatch Features \u0026amp; Functions\u003c\/h6\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorld Time:\u003c\/strong\u003e 38 time zones covering 38 cities plus Coordinated Universal Time (UTC), with daylight saving settings and automatic summer time switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStopwatch:\u003c\/strong\u003e 1\/100-second measurement for the first 60 minutes, switching to one-second measurement thereafter, with elapsed time and lap\/split functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountdown Timer:\u003c\/strong\u003e Adjustable from one second to 60 minutes, with one-second measurement intervals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDaily Alarms:\u003c\/strong\u003e Five independent daily alarms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHourly Time Signal:\u003c\/strong\u003e Optional audible signal every hour.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDouble LED Super Illuminator:\u003c\/strong\u003e Separate white LED illumination for the analogue dial and digital display, with selectable 1.5 or 3-second illumination and afterglow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand Shift:\u003c\/strong\u003e Temporarily moves the analogue hands away from the digital display for improved visibility.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull Auto Calendar:\u003c\/strong\u003e Automatically adjusts dates through to 2099.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime Format:\u003c\/strong\u003e Selectable 12 or 24-hour display.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDate Display:\u003c\/strong\u003e Adjustable date\/month display order.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDay Display:\u003c\/strong\u003e Day of the week available in six languages.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eButton Tone:\u003c\/strong\u003e Option to enable or disable button operation sounds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Level Indicator:\u003c\/strong\u003e Displays remaining rechargeable battery capacity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eDesigned for Everyday Reliability\u003c\/h6\u003e\n\u003cp\u003e\nThe GA-B2100-1A is designed for users who want a dependable, practical watch without sacrificing comfort or appearance. Its lightweight Carbon Core Guard construction, slim case and flexible resin strap make it comfortable during extended wear, whether working long shifts, travelling or spending time outdoors.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe combination of solar charging, automatic smartphone time adjustment and robust shock-resistant construction makes it particularly appealing to users who value low-maintenance equipment. Clear analogue hands, a compact digital display and dual LED illumination provide useful timekeeping information across a variety of lighting conditions.\n\u003c\/p\u003e\n\n\u003ch6\u003eWhy Choose the Casio G-SHOCK GA-B2100-1A?\u003c\/h6\u003e\n\u003cp\u003e\nThe GA-B2100-1A offers an excellent balance of classic G-SHOCK styling and modern functionality. Compared with the standard battery-powered GA-2100, it adds Tough Solar charging and Bluetooth® Smartphone Link while retaining the distinctive octagonal case, lightweight construction and exceptional shock resistance that made the original model so popular.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWith 200-metre water resistance, Carbon Core Guard protection, advanced timekeeping functions and a versatile black-and-grey design, it is an excellent choice for anyone seeking a durable analogue-digital watch that performs reliably at work, outdoors and during everyday activities.\n\u003c\/p\u003e\n\n\u003ch6\u003eAuthorised Casio Retailer\u003c\/h6\u003e\n\u003cp\u003e\nTacTree is an authorised Casio UK retailer. All Casio watches supplied are 100% genuine, brand new and sourced through approved UK distribution channels. Orders are supplied with official Casio packaging and manufacturer documentation for complete authenticity and peace of mind.\n\u003c\/p\u003e\n","brand":"Casio","offers":[{"title":"Default Title","offer_id":57715434783095,"sku":"PE9540","price":96.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/0860\/9010\/files\/Casio-G-Shock-2100-Series-Neobrite-Analogue-Digital-Watch-GA-B2100-1AER-2.webp?v=1794235493","url":"https:\/\/tactree.co.uk\/products\/casio-g-shock-2100-dual-display-bluetooth-solar-watch-ga-b2100-1aer","provider":"TacTree","version":"1.0","type":"link"}