
The Seestern S450 Ocean Star (ref. S450.WS) is an automatic diver watch, with a 40mm 316l stainless steel case, 12mm thick, powered by the TMI NH35A movement and a 41-hour power reserve. Water resistance is rated to 100m, under a sapphire crystal, with gmt, date complications. Manufacturer MSRP is $299.
Owners widely praise the Seestern S450 Ocean Star's Yachtmaster-style case and flawless bracelet finishing, with one owner noting the ST2130 movement keeps good time. The bezel action is described as having individual notches but feeling like a friction bezel, while another owner flags the bezel and crown action as smooth with perfect alignment. Lume is a point of contention, with one source describing it as a nice cool blue with ice-white application, while others note it as weak or not matching Prospex standards, despite using BGW-9. The watch is considered a "big boy" ideal for larger wrists (19cm+), potentially too large for 17cm wrists due to its size and non-tapering bracelet. Overall, owners rate the Seestern S450 Ocean Star highly for its build quality and finishing at the price point, despite some reservations about its size and lume intensity.
The matchups people make with the Seestern S450 Ocean Star most — open one to see it side by side.