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 community take
Owners widely praise the Heimdallr SKX007 Marine300 Dive Watch for its exceptional value, with one owner reporting it exceeded expectations compared to other models and noting its sapphire crystal. The case quality and finish are considered strong, with one owner stating it is the best available for $200. However, the bracelet is considered poor by one owner, though another source claims Heimdallr Sharkey bracelets are superior with solid end links. The watch features a Seiko NH35 automatic movement and 200m water resistance in a 42mm case. Overall, owners rate the Heimdallr SKX007 Marine300 Dive Watch highly for its impressive build quality and finishing at its price point.
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