Launched in 2019, the cleverly nicknamed G-Shock "Casioak" GA-2100 remains one of G-Shock's most sought-after references, with stock still depleted and being sold well above retail in many places. So when we got our hands on a very limited supply, we thought it'd be the perfect gift to accompany Topper's most popular G-Shock watches. That's right – simply order any G-Shock from this exclusive curation below, and we'll send you a Casioak on the house. Get started by choosing from our favorites which include the latest 'Full Metal' square-cased watches, as well as the next-gen Mudmaster and Frogman watches and lots more. Of course supplies are very limited, so you'll want to move quick!