Key Takeaways
1. Translucent Green Dial: The watch features a unique “HUF Green” acetate dial that is translucent, allowing visibility of the mechanical day and date wheels beneath it, inspired by the 1970s “Time Sonar.”
2. Case and Bracelet: It has a 39.4 mm stainless-steel case with a brushed finish and is paired with a three-link oyster-style bracelet, highlighted by an orange-tipped seconds hand for contrast.
3. Reliable Movement: The Seiko 5 Sports SRPM09 is powered by the Caliber 4R36 automatic movement, with a 41-hour power reserve and operates at 21,600 vibrations per hour.
4. Limited Availability: The watch is limited to 7,000 pieces globally, with only 1,000 available in Japan, and is priced around $450 (EUR 410).
5. Release Date: The watch is set for release in March 2026.
The Seiko 5 Sports SRPM09 HUF Limited Edition has been revealed in new, hands-on images after its release earlier this month in February. The watch features a translucent green dial inspired by “Time Sonar,” and it looks stunning in these images.
Unique Dial Interaction
Thanks to @SeikoLeaks on YouTube, we get a real look at how the “HUF Green” acetate dial reacts when light hits it. The level of transparency is impressive, allowing you to see the mechanical day and date wheels underneath. This dial design, which draws from the 1970s “Time Sonar,” creates a multi-layered, three-dimensional effect that is usually not found in the Seiko 5 line. While promotional images tend to gloss over these textures, the actual photos showcase a distinct industrial vibe, with the black horizontal “Automatic” text and “huf” logo at 6 o’clock appearing to float above the green surface.
Case and Bracelet Design
The stainless-steel case measures 39.4 mm and has a brushed finish typical of the “Field” series. It is matched with a three-link oyster-style bracelet. The hands-on images provide a good sense of how the watch’s 48.1 mm lug-to-lug distance looks on the wrist. Although a few shots showing it on a wrist would have been better, the attention-grabbing orange-tipped seconds hand stands out as the main high-visibility feature, giving a sharp contrast against the lime-green background.
Movement and Availability
For those who need a reminder, this watch is powered by the Caliber 4R36, a well-known automatic movement that has a 41-hour power reserve and operates at 21,600 vibrations per hour. This movement can be seen through a green-tinted exhibition case back that features a custom graphic of San Francisco, although the video does not show the case back (see below). The watch is limited to 7,000 pieces worldwide, with only 1,000 units available in Japan under reference SBSA323, and it is priced around $450 (EUR 410). Its release is planned for March 2026.
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