Custom Watches, Seiko Mods & Watch Modification Services

Modified Seiko watches that stand out from the crowd.

Seiko mods

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Modified with the finest quality components to enhance both functionality and style.

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International Delivery

Insured express shipping for orders worldwide.

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Quality Guarantee

Highest quality standards and after sales support.

Our customers worldwide love us

Rated 'excellent' in over 200 Trustpilot reviews!

Ben is an amazing horologist, who has built 5 unique timepieces for me, each one different from the last. From skeletonised timepieces, to GMT's, to field watches and divers

Sean C, United States

Just received my chromatic GMT. Beautifully constructed and finished. This is my second CS watch. I cannot recommend more highly. Thank you Ben

John D, Switzerland

I received the custom Abyss Divers watch and was absolutely blown away by the quality. It feels way more expensive and the attention to detail is impeccable. Ben's customer service is absolutely spot on as well. I’ll definitely be buying another watch again in future.

Mark W, United Kingdom

Ordered a custom watch from CS Watches and am very happy with both workmanship and overall quality. The accuracy of the movement is impressive: the watch looses less than a second a day.

Andy J, Germany

Great watches - Great service. Like the reviews before me I am very happy with my experience purchasing a watch at CS Watches. Beautiful watch, great service and fast shipping (shipped to NY). Thank you Ben for your thoughtful communication and beautiful work.

Benjamin F, United States