Skip to content
G-Shock Octagon Series Dual Display Watch GA-2100-1A1ER
£99.90 £85.95
Free HUGO BOSS pen or Jewellery Set when you spend £295 or more*
Add Theft, Damage and Loss Insurance from £7.11

Choose your Insurance

Terms & Conditions

This insurance is optional and will meet the demands and needs of a UK resident requiring insurance for jewellery or watches in the United Kingdom, Channel Islands and Isle of Man plus up to 30 consecutive days elsewhere in the world any one trip.

The insurance is administered by T H March & Co. Limited, Hare Park House, Yelverton Business Park, Yelverton, Devon, PL20 7LS, and they are authorised and regulated by the Financial Conduct Authority (FCA). This may be checked on the Financial Services Register on the FCA’s website.

In the unlikely event that you may wish to make a complaint, this should be directed to T H March. The complaints procedure is detailed in your insurance documentation.

It is important you read the certificate as this details the terms, conditions and any restrictions in cover.

Your insurance was added successfully
  • year(s) cover for
Out of Stock


This stealthy, all black timepiece embeds the latest carbon core guard technology in a slimmer more refined case. Taking inspiration from the 1983 original model, the DW-5000C, this watch pays homage to the much loved retro look with its unique octagonal bezel, framing a dual display. As with the GA-2000, the GA-2100 has an interchangeable resin strap for customisation with any outfit and occasion. Despite its deceptively compact design, this watch is as durable and tough as any G-SHOCK on offer with 200 meter water resistance and shock resistance. • Stainless steel pipes form a metal frame that joins the bezel securely with the case back for increased shock resistance. • 200m water resistance. • Displays the current time in major cities and specific areas around the world. • Shock-resistant construction protects against impact and vibration. • Simultaneous display of the current time in two different time zones. Home city time swapping.
Show More



Brand Casio Case Depth 12.0mm
Brand Code GA-2100-1A1ER Warranty 2 Year Casio Warranty
House of Watches Code 2143309 Chronograph No
Back Light Yes Alarm Yes
Case Width 46mm Tachymeter No
Luminescent Dial And Hands No Packaging Official Casio Packaging
Glass Type Mineral Crystal Glass Clasp Type Traditional Buckle
Case Shape Octagon Case Material Plastic


Strap Type Rubber Strap Strap Colour Black


Watch Movement Quartz