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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The San Martin Fashion Sports NH35 SN0106 draws consistent praise for its clean dial design, seamless case-to-bracelet transition, and 37mm proportions, which owners find well-balanced. The BGW-9 chapter ring lume and Beads of Rice bracelet construction are explicitly singled out as solid. Thickness is a point of division — at 13.1mm, some owners view it as too chunky for a sport/dress watch, while others accept or prefer the profile; the second hand can be difficult to read in low light. Overall, owners rate the San Martin Fashion Sports NH35 SN0106 highly for its refined finishing and proportions at the price.
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