Seiko 5 Sports x HUF SRPM09K1 Green Time Sonar Limited to 7,000

Seiko 5 Sports and HUF put a clear stake in spring with the SRPM09K1: a limited 7,000-piece run that pairs HUF’s signature green with a vintage Time Sonar–inspired dial, and the brands positioned the drop for March 2026. The model code SRPM09K1 is the handle; the headline is the colorway and the nod to Seiko’s past, that combination is the selling point here.

The dial is the story: the collaboration leans into a vintage Time Sonar reference while foregrounding HUF’s green as the dominant element. The SRPM09K1’s design language reads like a skate-heritage flex for the wrist, the HUF green isn’t a whisper, it’s the tone the watch wears. That green plus a Time Sonar-inspired face gives the piece a streetwear silhouette in miniature: loud, wearable, and immediately recognizable.

Seiko 5 Sports and HUF released the details on February 19, 2026, and positioned the SRPM09K1 for March 2026 availability. The tight cap of 7,000 units worldwide makes this more than a seasonal accessory; it’s a numbered opportunity for collectors who track Seiko x streetwear drops. With the March timing, expect the SRPM09K1 to hit the spring rotation hard, the run size and the green dial mean this will be competed over by both HUF collectors and Seiko 5 Sports fans.

This isn’t a cautious collaboration. Seiko 5 Sports’ decision to attach the Time Sonar reference to an HUF colorway signals intent: merge Seiko’s archival cues with skate-lifestyle aesthetics and move volume through scarcity. Limiting the SRPM09K1 to 7,000 pieces worldwide is a straightforward way to create buzz, and the March 2026 window positions it ahead of warm-weather sneaker and accessory drops that will frame how people actually wear the watch.

The SRPM09K1 lands as a clean example of what these crossovers look like when both brands lean in, Seiko 5 Sports for the mechanical heritage and HUF for the cultural color. If you want a simple thesis: HUF green plus Time Sonar vibe plus 7,000 pieces equals a spring drop that will matter to collectors and to anyone building a streetwear look around one strong accent piece.