Seiko 5 Sports x HUF SRPM09 Limited Edition Field Watch

Archival Seiko Heritage. HUF Green Street Style.

The Seiko 5 Sports x HUF SRPM09 reimagines an archival Seiko model from the 1970s, affectionately known as the “Time Sonar,” through the distinctive lens of HUF. Founded by professional skateboarder Keith Hufnagel, HUF brings its clean aesthetic, bold design language, and deep roots in skateboarding and street culture to this limited-edition field watch.

Based on the Seiko 5 Sports Field series, the SRPM09 is defined by its vibrant “HUF Green” semi-transparent dial, a color created exclusively for this collaboration and not found on the original archival model. The HUF logo sits at 6 o’clock, while the exhibition case back echoes the dial in HUF Green and features a San Francisco-inspired graphic, a nod to the city where HUF was founded.

Powered by the dependable automatic Caliber 4R36, this 39.4mm stainless steel watch balances everyday utility with unmistakable collaborative character. LIMITED EDITION and an individual serial number are engraved on the case back. The presentation includes a special stainless steel box and an original watch cloth.

Movement

• Caliber: 4R36
• Type: Automatic with manual winding
• Power Reserve: Approx. 41 hours
• Jewels: 24
• Functions: Stop second hand, Day/Date display

Case & Band

• Case Material: Stainless steel
• Diameter: 39.4mm
• Thickness: 11.6mm
• Lug-to-Lug: 48.1mm
• Lug Width: 20mm
• Crystal: Hardlex
• Clasp: Three-fold clasp with push button release and secure lock
• Bracelet Length: 210.0mm
• Case Back: See-through and screw case back with HUF Green finish

Additional Specifications

• Dial: Semi-transparent HUF Green with HUF logo at 6 o’clock
• Water Resistance: 10 bar (100m)
• Magnetic Resistance: 4,800 A/m
• Weight: 146.0g
• LumiBrite: Hands and indexes
• Limited Edition Details: LIMITED EDITION engraving and individual serial number on the case back
• Included: Special stainless steel box and original watch cloth