--- type: product title: G-Shock GA-2100K-5AER Analogue Digital Watch handle: g-shock-ga-2100k-5aer-analogue-digital-watch url: >- https://www.hsjohnson.com/products/g-shock-ga-2100k-5aer-analogue-digital-watch sku: GA-2100K-5AER price: '10900.0' currency: GBP tags: - in_stock - Mens - new-arrival - Womens collections: - Watches - G-Shock - In Stock - All - Mens Watches - Womens Watches - OrderlyEmails - Recommended Products - New Arrivals variants: - title: Default Title price: '109.00' sku: GA-2100K-5AER images: - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER_Custom.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER1_Custom.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER2_Custom.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER4_Custom.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER5_Custom.jpg?v=1783671707 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER7_Custom.jpg?v=1783671707 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER9_Custom_-fotor-2026070993642.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER8_Custom_-fotor-2026070993510.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER6_Custom_-fotor-2026070993343.jpg?v=1783671708 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100K-5AER3_Custom_-fotor-2026070993232.jpg?v=1783671708 created_at: null updated_at: null metafields: shopify.case-color: '["gid://shopify/Metaobject/54410313954"]' shopify.watch-display: >- ["gid://shopify/Metaobject/54404710626","gid://shopify/Metaobject/56300667106"] shopify.watch-features: >- ["gid://shopify/Metaobject/56300732642","gid://shopify/Metaobject/54404776162","gid://shopify/Metaobject/54487679202"] shopify.age-group: '["gid://shopify/Metaobject/54405955810"]' shopify.band-color: '["gid://shopify/Metaobject/54410313954"]' shopify.dial-color: '["gid://shopify/Metaobject/54409167074"]' shopify.watch-material: '["gid://shopify/Metaobject/307522634104"]' global.tag-18-pricing-rule: '05 - Beat all small: combined' global.tag-21-minimum-price: '60' global.tag-22-maximum-price: '15' --- Immerse yourself in the pulse of nocturnal energy with this striking G-Shock GA-2100K-5AER. Inspired by the vibrant atmosphere of music venues and festivals, this watch channels the essence of after-hours culture through its carefully crafted design. The dial features a newly engineered surface finish that delivers a crisp, refined look, complemented by a high-gloss sheen and deep piano-black colour. Contrasting textures create visual intrigue — neon accents flash like strobe lights, while the matte, translucent bezel and band evoke the atmospheric haze of the dance floor. Clean lines define the GA-2100 silhouette, merging contemporary aesthetics with the legendary durability G-SHOCK is known for. A timepiece that captures the spirit of the night while standing up to everyday demands. **We are a Casio UK authorised dealer** **New boxed stock with full retail boxes & paperwork** **Basic Information** Case size (L× W× H) 48.5 × 45.4 × 11.8 mm Weight 51 g Case and bezel material Carbon / Resin　 **Band** Resin Band Construction Shock Resistant Carbon Core Guard structure Water resistance 200-metre water resistance Power supply and battery life Approx. battery life: 3 years on SR726W X 2 Country of origin Thailand **Exterior** Glass Mineral Glass Compatible band size 145 to 215 mm Other Neobrite **Watch Features** World time 31 time zones (48 cities + Coordinated Universal Time), daylight saving on/off Stopwatch 1/100-second stopwatch Measuring capacity: 00'00''00 to 59'59''99 (for the first 60 minutes) 1:00'00 to 23:59'59 (after 60 minutes) Measuring unit: 1/100 second (for the first 60 minutes) 1 second (after 60 minutes) Measuring modes: Elapsed time, split time, 1st-2nd place times Timer Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) Alarm/hourly time signal 5 daily alarms Hourly time signal Light Double LED light LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Light colour LED: White Calendar Full auto-calendar (to year 2099) Mute feature Button operation tone on/off Accuracy Accuracy: ±15 seconds per month **Other features** 12/24-hour format Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) Regular timekeeping: Analogue: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date