New Seiko Prospex automatic watches officially teased for October 22
Seiko has posted a brief teaser on its Singapore Instagram page for a set of Prospex watches headed to the Asia-Pacific region on 22 October 2025. The image shows three diver-style pieces side by side and carries the tagline that the design is "inspired by the wonders of nature," with a clear call to "stay tuned." Seiko labels the launch an Asia-Pacific limited edition, which suggests region-specific allocations and small production runs.
The photos make a few things obvious. All three models use a uni-directional dive bezel with clear 10-20-30-40-50 minute markings, and the bezels come in distinct colors: a teal/green on the left, a dark grey or black centre option, and a deep blue on the right. Each watch is shown on a textured rubber or silicone strap rather than a metal bracelet. Case shapes look classic Prospex - rounded with short lugs and a prominent bezel - and the overall profiles appear relatively slim for a modern dive piece.
Seiko’s copy and the visual hints point to a nature theme rather than a pure tool watch story. The green and blue bezels have more of a coastal/marine theme, while the darker middle option may have a more urban look. Seiko often bottles regional limited editions with dial or bezel accents tied to local themes, so we can expect small cosmetic touches and a limited serial run rather than major mechanical differences from current Prospex watches, such as the SRPE93 (curr. $389 on Amazon).
While Seiko hasn’t disclosed detailed specifications, the hashtags included in the post - #spb539, #spb541, #spb543, #automatic, and #6r35 - reveal key details. These references indicate that the new lineup with the model numbers SPB539, SPB541, and SPB543 will feature the 6R35 automatic movement, with approximately 70 hours of power reserve and 200 meters of water resistance, like Seiko’s other SPB-series divers.
What remains unclear from the teaser: exact case size and production numbers. Those details should surface with the full reveal on 22 October.
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