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.
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San Martin Stainless Steel NH35 SN0132 draws strong praise from owners for its turbine dial design, on-the-fly adjustable clasp, and finishing quality at its price point—though the clasp has proven unreliable for at least one owner who required a replacement from San Martin. The movement performs within specification. Owners note the watch wears noticeably larger and heavier than its 40mm spec suggests, and the crown guards strike some as disproportionately heavy for the 100m water resistance rating; the lack of a lumed seconds hand and ghost date window on the dial are cited as compromises at the price. Finishing shows some marks—faint lug marks and clasp scuffs reported by one owner—though the overall case finishing is well-regarded in hand. On balance, the San Martin Stainless Steel NH35 SN0132 is valued by owners primarily for its distinctive dial aesthetics and clasp design at its accessible price, despite concerns about clasp durability and certain design choices.
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