{"product_id":"casio-ga-2100k-series-analogue-digital-watch-ga-2100k-1aer","title":"Casio G-SHOCK GA-2100K Series Analogue Digital Watch (GA-2100K-1AER)","description":"\u003ch6\u003eOverview\u003c\/h6\u003e\n\n\u003cp\u003e\nThe Casio G-SHOCK GA-2100K-1A combines the iconic octagonal design of the G-SHOCK 2100 Series with a distinctive aesthetic inspired by the energy and atmosphere of nightlife. Featuring a deep piano-black dial, vibrant neon green accents and a matte translucent black bezel and strap, this analogue-digital watch captures the visual contrast of laser lighting cutting through smoky club and festival environments.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBeneath its contemporary appearance, the GA-2100K-1A retains the exceptional durability that defines G-SHOCK. Its Carbon Core Guard construction provides lightweight shock resistance, while 200-metre water resistance, double LED illumination and a comprehensive range of timekeeping functions make it a practical choice for everyday wear and outdoor activities. Measuring just 11.8 mm thick and weighing only 51 g, it delivers impressive toughness in a slim, comfortable design.\n\u003c\/p\u003e\n\n\u003ch6\u003eKey Features\u003c\/h6\u003e\n\n\u003cul\u003e\n\u003cli\u003eIconic octagonal G-SHOCK 2100 Series design\u003c\/li\u003e\n\u003cli\u003eDistinctive piano-black dial with contrasting neon green accents\u003c\/li\u003e\n\u003cli\u003eMatte translucent black resin bezel and strap inspired by atmospheric nightlife\u003c\/li\u003e\n\u003cli\u003eNewly developed smooth dial finish with a refined, high-gloss appearance\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 combining traditional hands with digital functionality\u003c\/li\u003e\n\u003cli\u003eDouble LED Super Illuminator for improved visibility in darkness\u003c\/li\u003e\n\u003cli\u003eWorld Time covering 31 time zones and 48 cities, plus UTC\u003c\/li\u003e\n\u003cli\u003e1\/100-second stopwatch and 24-hour countdown timer\u003c\/li\u003e\n\u003cli\u003eFive daily alarms and hourly time signal\u003c\/li\u003e\n\u003cli\u003eHand Shift function for an unobstructed view of the digital display\u003c\/li\u003e\n\u003cli\u003eNeobrite luminous coating for improved visibility in low light\u003c\/li\u003e\n\u003cli\u003eApproximately three-year battery life\u003c\/li\u003e\n\u003cli\u003eLightweight 51 g construction with a slim 11.8 mm profile\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eSpecifications\u003c\/h6\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GA-2100K-1A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCollection:\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 × 11.8 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 51 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 Matte translucent 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 Two SR726W batteries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery Life:\u003c\/strong\u003e Approximately 3 years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimekeeping Accuracy:\u003c\/strong\u003e ±15 seconds per month\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIllumination:\u003c\/strong\u003e Double white LED Super Illuminator\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e Neobrite, Hand Shift and automatic calendar\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Manufacture:\u003c\/strong\u003e Thailand\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eNightlife-Inspired Design\u003c\/h6\u003e\n\n\u003cp\u003e\nThe GA-2100K-1A introduces a bold new interpretation of the classic G-SHOCK octagonal silhouette. Inspired by the interplay of darkness, smoke and vibrant lighting found in clubs and music festivals, the design combines contrasting materials and finishes to create a distinctive contemporary appearance.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA newly developed dial surface provides a smooth, refined foundation for the deep piano-black finish, creating an impression of depth beneath the watch glass. Bright neon green details across the dial and hands provide striking contrast, recalling the appearance of laser beams against a dark background.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe matte translucent black bezel and strap introduce a softer, smoky texture that complements the glossy dial. This combination of transparent materials, contrasting finishes and vivid colour accents gives the GA-2100K-1A a distinctive identity while retaining the instantly recognisable proportions of the G-SHOCK 2100 Series.\n\u003c\/p\u003e\n\n\u003ch6\u003eCarbon Core Guard Protection\u003c\/h6\u003e\n\n\u003cp\u003e\nThe GA-2100K-1A features Casio's Carbon Core Guard structure, which uses carbon fibre-reinforced resin to protect the internal watch module against shocks and impacts. This advanced construction combines strength with low weight, allowing the watch to maintain its slim 11.8 mm profile without compromising the durability expected from G-SHOCK.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe carbon-reinforced case is complemented by a flexible resin strap designed for comfortable extended wear. Weighing just 51 g, the watch is particularly well suited to users who prefer a lightweight timepiece that remains comfortable during long working days, travel and physical activity.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWith 200-metre water resistance, the GA-2100K-1A is suitable for swimming, wet weather and demanding outdoor conditions. Its shock-resistant construction and durable mineral glass provide additional protection against the knocks and impacts encountered during everyday use.\n\u003c\/p\u003e\n\n\u003ch6\u003eAnalogue-Digital Timekeeping\u003c\/h6\u003e\n\n\u003cp\u003e\nThe GA-2100K-1A combines the traditional appearance of an analogue watch with the convenience of a multifunction digital display. Two central hands provide clear hour and minute indications, while a dedicated day indicator and digital display provide access to additional timekeeping information.\n\u003c\/p\u003e\n\n\u003cp\u003e\nThe integrated Hand Shift function temporarily moves the analogue hands away from the digital display, ensuring important information remains visible when the hands would otherwise obstruct the screen.\n\u003c\/p\u003e\n\n\u003cp\u003e\nFor international travel and working across different time zones, the watch includes World Time covering 31 time zones and 48 cities, plus Coordinated Universal Time (UTC). Daylight saving settings can be adjusted where required, making it easy to monitor the time in different locations.\n\u003c\/p\u003e\n\n\u003ch6\u003eDouble LED Super Illuminator\u003c\/h6\u003e\n\n\u003cp\u003e\nThe GA-2100K-1A features Casio's Double LED Super Illuminator system, providing separate white LED illumination for the analogue dial and digital display. This dual-light arrangement improves visibility in darkness, allowing users to check the time and access digital functions in low-light environments.\n\u003c\/p\u003e\n\n\u003cp\u003e\nIllumination duration can be selected between 1.5 and 3 seconds, with an afterglow function providing additional visibility after activation. Neobrite luminous coating also supports analogue time reading in low-light conditions following exposure to light.\n\u003c\/p\u003e\n\n\u003cp\u003e\nWhether checking the time during an evening run, working in poorly illuminated environments or travelling after dark, the illumination system provides practical visibility without compromising the watch's distinctive appearance.\n\u003c\/p\u003e\n\n\u003ch6\u003eWatch Features \u0026amp; Functions\u003c\/h6\u003e\n\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorld Time:\u003c\/strong\u003e 31 time zones covering 48 cities plus Coordinated Universal Time (UTC), with daylight saving settings.\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 a maximum measuring capacity of 23 hours, 59 minutes and 59 seconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStopwatch Modes:\u003c\/strong\u003e Elapsed time, split time and first\/second-place finish times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountdown Timer:\u003c\/strong\u003e Adjustable from one second to 24 hours, with one-second, one-minute and one-hour setting increments.\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 Light:\u003c\/strong\u003e Separate white LED illumination for the analogue dial and digital display, with selectable 1.5-second or 3-second duration 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 the date through to 2099.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTime Format:\u003c\/strong\u003e Selectable 12 or 24-hour digital display.\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\u003eAnalogue Display:\u003c\/strong\u003e Hour and minute hands, with the minute hand advancing every 20 seconds, plus a dedicated day indicator.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital Display:\u003c\/strong\u003e Hours, minutes, seconds, AM\/PM, month and date.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch6\u003eBuilt for Everyday Reliability\u003c\/h6\u003e\n\n\u003cp\u003e\nThe GA-2100K-1A offers the durability and functionality expected from G-SHOCK in a distinctive design that works equally well for everyday wear and active use. Its lightweight Carbon Core Guard construction, slim profile and flexible resin strap provide a comfortable fit without sacrificing strength or impact protection.\n\u003c\/p\u003e\n\n\u003cp\u003e\nA conventional battery-powered movement delivers approximately three years of operation using two SR726W batteries, providing dependable timekeeping without the need for regular charging. Combined with 200-metre water resistance, practical timing functions and dual LED illumination, the watch offers reliable performance across a wide range of environments.\n\u003c\/p\u003e\n\n\u003ch6\u003eWhy Choose the Casio G-SHOCK GA-2100K-1A?\u003c\/h6\u003e\n\n\u003cp\u003e\nThe GA-2100K-1A combines the enduring appeal of the G-SHOCK 2100 Series with a distinctive design inspired by contemporary music and nightlife culture. Its deep piano-black dial, vibrant neon green accents and matte translucent black resin construction create a striking alternative to traditional solid-colour G-SHOCK models.\n\u003c\/p\u003e\n\n\u003cp\u003e\nBeyond its appearance, the watch delivers the practical performance that has made the GA-2100 Series so popular. Carbon Core Guard protection, 200-metre water resistance, double LED illumination and comprehensive digital functions provide dependable everyday versatility, while the lightweight 51 g construction ensures comfortable wear. For anyone seeking an analogue-digital G-SHOCK that combines distinctive styling with proven durability, the GA-2100K-1A is an excellent choice.\n\u003c\/p\u003e\n\n\u003ch6\u003eAuthorised Casio Retailer\u003c\/h6\u003e\n\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":57715435143543,"sku":"PE9544 GRY","price":94.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0676\/0860\/9010\/files\/casio-ga-2100k-series-analogue-digital-watch-ga-2100k-1aer-1.webp?v=1794238562","url":"https:\/\/tactree.co.uk\/products\/casio-ga-2100k-series-analogue-digital-watch-ga-2100k-1aer","provider":"TacTree","version":"1.0","type":"link"}