Seiko 5 Sports x HUF SRPM09 Limited Edition – Time Sonar Inspired

A standout collaboration between Seiko 5 Sports and HUF, the SRPM09 brings together Seiko’s mechanical heritage and HUF’s unmistakable skate and streetwear aesthetic.

Inspired by the cult-favorite Seiko “Time Sonar” watches of the 1970s, the SRPM09 features a striking semi-transparent HUF Green dial, allowing portions of the day-date mechanism beneath to subtly show through. The HUF logo at 6 o’clock and contrasting details give the watch a distinctly retro-futuristic character.

This is a numbered Limited Edition of only 7,000 pieces worldwide, making it especially appealing to Seiko collectors, Time Sonar enthusiasts, and fans of HUF.

The exhibition caseback continues the theme with HUF Green detailing and artwork inspired by San Francisco, where HUF was founded. Each watch is individually numbered and supplied in a special stainless-steel presentation box with an original watch cloth.

Specifications

• Reference: SRPM09 / SRPM09K1

• Limited Edition: 7,000 pieces worldwide

• Movement: Seiko 4R36 automatic

• Manual winding & hacking capability

• 24 jewels

• Power reserve: Approx. 41 hours

• Day & date display

• Case: Stainless steel

• Diameter: 39.4mm

• Thickness: 11.6mm

• Lug-to-lug: 48.1mm

• Lug width: 20mm

• Crystal: Hardlex

• Dial: Semi-transparent HUF Green

• LumiBrite hands and hour markers

• Bracelet: Stainless steel

• Water resistance: 100 meters / 10 bar

• See-through screw caseback

• Individually numbered caseback

• Special HUF presentation packaging

A genuinely unusual Seiko 5 release—the SRPM09 combines the collectible appeal of the vintage Time Sonar concept with one of Seiko’s most distinctive modern collaborations.