
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 Sheffield Allsport Diver 1 for its superb quality and sturdiness at an affordable price, with many calling it a hit and a no-brainer purchase. The blue dial is a particular highlight, and the watch is noted to resist scratches well despite heavy use. One owner dislikes the lack of a quick-set date, finding it cumbersome to adjust. Overall, owners rate the Sheffield Allsport Diver 1 highly for its surprising quality and appearance at its price point.
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