--- type: product title: G-Shock GA-2100RL-1AER Analogue-Digital 2100 Series Watch handle: g-shock-ga-2100rl-1aer-analogue-digital-2100-series-watch url: >- https://www.hsjohnson.com/products/g-shock-ga-2100rl-1aer-analogue-digital-2100-series-watch sku: GA-2100RL-1AER price: '7900.0' currency: GBP tags: - in_stock - Mens collections: - Watches - G-Shock - In Stock - All - Mens Watches - OrderlyEmails - Recommended Products variants: - title: Default Title price: '79.00' sku: GA-2100RL-1AER images: - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100RL-1AER.jpg?v=1764156846 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100RL-1AER4.jpg?v=1764156846 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100RL-1AER1.jpg?v=1764156846 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100RL-1AER2.jpg?v=1764156847 - >- https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GA-2100RL-1AER3.jpg?v=1764156846 created_at: null updated_at: null metafields: custom.amazon_price: '79.00' global.tag-18-pricing-rule: '05 - Beat all small: combined' global.tag-21-minimum-price: '60' global.tag-22-maximum-price: '15' global.tag-27-discount-code: '0' global.tag-26-maximum-discount-code-p: '0' custom.normal_message: '["IN STOCK"]' custom.preorder_message: '["ORDER NOW, DELIVERY DATE TBC"]' shopify.case-color: '["gid://shopify/Metaobject/54409167074"]' shopify.watch-display: >- ["gid://shopify/Metaobject/54404710626","gid://shopify/Metaobject/56300667106"] --- Casio's homage to four decades of revolutionary watchmaking, the GA-2100RL-1AER merges heritage with contemporary engineering. Born from the 1983 original that redefined durability standards, this iteration honours the iconic silhouette—now protected by Japan's first 3D wristwatch trademark—whilst incorporating modern G-SHOCK innovations. The stainless steel case and bio-based resin band faithfully recreate the classic aesthetic, complete with signature brick patterning and symbolic colour accents: red denoting determination, blue signifying water resistance, and yellow representing shock resistance. A high-brightness LED backlight and refined 42.3mm proportions enhance everyday usability without compromising timeless appeal. Delivering 20-bar water resistance, world time functionality, stopwatch, countdown timer, and dual alarms, this timepiece exemplifies G-SHOCK's unwavering commitment to toughness, precision, and enduring design excellence. **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 / Bio-based resin Band Bio-based 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 China **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