Skip to content
Casio G-SHOCK GA-2100-1AER Men's Black Octagon Analogue-Digital Watch

Casio G-SHOCK GA-2100-1AER Men's Black Octagon Analogue-Digital Watch

The Casio G-SHOCK GA-2100-1AER is a modern men's watch that combines the iconic durability of the G-SHOCK line with a refined, retro-inspired aesthetic. Its most distinctive feature is the unique octagonal bezel, which pays homage to the original 1983 G-SHOCK models while housing a slimmer, more wearable case. The watch utilises Carbon Core Guard construction, making it exceptionally lightweight and shock-resistant without compromising on strength. It operates on a reliable quartz movement and is powered by a battery. The watch features a multifunction analogue-digital display with a black dial, housed within a black resin case. It is fitted with an adjustable black resin strap for a secure and comfortable fit. Practical functions include a chronograph, stopwatch, countdown timer, world time for 48 cities, daily alarms, and a day-date display. For low-light visibility, it is equipped with an LED backlight. A key feature is its 200-metre water resistance, making it suitable for professional marine activity and serious surface water sports. This G-SHOCK is best suited for individuals seeking a robust, functional timepiece with a distinctive style that bridges classic and contemporary design. Its combination of advanced shock protection, substantial water resistance, and comprehensive timekeeping features makes it ideal for active lifestyles, outdoor enthusiasts, or anyone who appreciates reliable tool-watch functionality. The sleek black and grey colour scheme ensures it remains versatile enough for both casual and everyday wear.
Brand:Casio
Compare prices from £75.00 to £119.00
Save £44.00 (37%)
4.6 / 5(14 reviews)
4549526241703
5 retailers
H.Samuel Best price
£75.00 *
In Stock
Retailer information

We checked this product from this store on 19 Feb 2026 at 03:33.

Other

Warranty
Our team of skilled artisans provide care and repair services to maintain the beauty and craftsmanship of your pieces.
Trust
Trusted UK Jeweller
Open retailer
Freemans
£99.90 *
In Stock 28 days returns Pay later: Yes
Retailer information

We checked this product from this store on 19 Feb 2026 at 01:19.

Delivery

Couriers
Evri

Returns & refunds

Return window
28 days
Methods
Evri Parcelshop, locker, or courier collection from home or work.
Free returns
Refund
Within 10 days of return receipt.
Policy
Free returns within 28 days of delivery for a full refund.

Collection & in-store

Availability
Available online only

Payment & finance

Pay later
Flexi3

Support

Contact
Phone: 0333 200 8077
online contact form available.
Self-service
Online account management, returns initiation, order tracking.

Other

Trust
Authorised by Financial Conduct Authority (FCA), member of Finance & Leasing Association (FLA).
Open retailer
Argos Product reviews 4.6 (14)
£103.95 (incl. £3.95 delivery)
In Stock Same day if ordered by 1pm, next day and standard delivery options available. Click & collect
Retailer information

We checked this product from this store on 17 Feb 2026 at 02:58.

Delivery

Cost
£3.95
Time
Same day if ordered by 1pm, next day and standard delivery options available.
Restrictions
Minimum £20 spend for Argos Plus delivery, excludes clothing and supplier-delivered items. Subject to stock, postcode, and availability.

Collection & in-store

Click & collect
Available
Availability
In store & online

Support

Self-service
Order tracking online via website.
Open retailer
Ernest Jones
£119.00
In Stock Click & collect Pay later: Yes
Retailer information

We checked this product from this store on 15 Feb 2026 at 17:36.

Delivery

Cost
Free

Collection & in-store

Click & collect
Available
Locations
Ernest Jones stores
Availability
In store & online

Payment & finance

Methods
MasterCard, Visa, Solo, American Express, PayPal
Interest-free
6, 9, 12, 18, 24, 30, 36 months
BNPL
Clearpay available subject to approval
PayPal Credit for UK residents over 18 excluding Channel Islands and Isle of Man.
Pay later
Clearpay, PayPal Credit, Novuna

Support

Contact
Phone: 0800 458 1066, Email: [email protected], Address: Customer Services, Signet Trading Ltd, Hunters Road, Birmingham, B191DS

Other

Gift options
Gift cards, eGift cards, and insurance replacement cards available.
Open retailer

* Price may not include delivery when not stated by the retailer. Prices may have changed since we last checked. We are not liable for any errors or omissions; please confirm price, availability and terms with the retailer before purchasing.

Page last updated: 19 Feb 2026, 12:14