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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Owners widely praise the San Martin BB58 Automatic Watcth SN0128 for its excellent finishing and luxury feel at its price point, with many highlighting the unique brown waffle dial and the on-the-fly adjustable bracelet as significant strengths. Some owners find the greenish lume clashes with the dial colors, while others prefer the brown dial for its warm vintage feel. The Seiko NH35 movement is noted by some for inconsistent regulation, with one owner reporting it gains about a minute over a few days. Overall, owners rate the San Martin BB58 Automatic Watcth SN0128 highly for its superb build quality and beautiful appearance, especially considering its value.
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