
Seiko
Seiko's third-party supply version of the 4R35, sold to external watch brands and modders worldwide. Adds hacking and hand-winding over the 7S26 it effectively replaced. The NH35 has become the default automatic movement for watch modding and microbrand watches, thanks to its low cost, reliability, and wide availability of compatible parts including dials, hands, and cases in the Seiko-compatible format.
U.S. collection · 16 watches












3 colorways
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Owners widely praise the Addiesdive Tuna Diver Automatic Watch AD2098 for its incredible value and surprising quality for the price, with many noting its bright, durable BGW9 lume that lasts until morning and a reliable Seiko NH35 automatic movement. Some owners find the watch to be a competent homage with a clean dial and applied indices, while others appreciate its heft and well-built bracelet. One owner reported accuracy of -3 seconds per day after six months. However, some owners question water resistance claims for actual diving and express reservations about warranties. A few specific criticisms include a scratch-prone mineral crystal, a hollow-sounding bezel, a rattly oyster bracelet, and underwhelming hands on one example, with one owner noting a misaligned bezel insert requiring reattachment. Opinions are split on the original "fat martian" logo, though an updated script logo is available.
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