Seiko 5 Sports SRPJ75 Honda Super Cub Limited Edition Automatic

The Seiko 5 Sports SRPJ75 (also coded SRPJ75K1 on some markets) is Seiko’s black Honda Super Cub collaboration piece — a limited automatic built on the familiar SKX-style 5 Sports sports platform. The dial echoes the front view of Honda’s Super Cub C125: two-tone black and grey panels, mixed square and round applied markers that read like headlight and indicators, and an applied Super Cub emblem above six o’clock. A black hard-coated case matches the blacked-out C125 bodywork, while the see-through case back uses a translucent red tint nodding to the motorcycle’s tail light.

Inside is the workhorse Caliber 4R36: automatic with manual winding, hacking seconds, day-date at 3 o’clock and about 41 hours of power reserve. The case measures 42.5mm across, about 13.4mm thick and 46mm lug-to-lug with 22mm lugs — a known, wearable sports size. Hardlex crystal, unidirectional bezel, LumiBrite on hands and indices, 100m water resistance and a striped nylon NATO-style strap complete a ready-to-wear package. This black colourway was limited to 5,000 pieces, with Limited Edition and serial marking on the case back.

Why you’ll love the SRPJ75

• Honda Super Cub dial story — genuine collab graphics and emblem, not a generic motorcycle print.
• Black DLC-style hard coating — stealth case and crown that match the international Super Cub C125 colour story.
• Everyday 5 Sports specs — 4R36 automatic, day-date, 100m WR and a unidirectional bezel for daily sport wear.
• Wearable size — 42.5mm diameter with a short 46mm lug-to-lug that sits closer to classic SKX proportions than oversized modern divers.
• Display case back — screw see-through back with translucent red glass and collab branding.
• Limited run — 5,000 pieces for SRPJ75, serial-marked for collectors who want the black Super Cub variant.

Who it suits

Choose the SRPJ75 if you want a limited Seiko 5 Sports automatic with a clear collab theme — motorcycle fans, Seiko 5 collectors, or anyone who prefers a blacked-out SKX-style watch over a plain catalogue dial. It works as a weekend sports watch, a travel piece on the NATO strap, or a conversation piece on the desk. If you prefer a green “Tasmania” Super Cub colourway, that was the related SRPJ49 reference; if you need 200m dive rating and sapphire, look at Prospex divers instead.

Technical specifications

• Reference: SRPJ75 / SRPJ75K1
• Collection: Seiko 5 Sports × Honda Super Cub Limited Edition
• Limitation: 5,000 pieces (black colourway)
• Movement: Seiko Caliber 4R36 automatic, 24 jewels, manual winding, hacking seconds
• Functions: Hours, minutes, seconds, day, date
• Power reserve: Approximately 41 hours
• Case: Stainless steel with black hard coating; diameter 42.5mm; thickness about 13.4mm; lug-to-lug about 46mm
• Crystal: Hardlex
• Bezel: Unidirectional rotating
• Dial: Black and grey Super Cub-inspired layout with applied markers and Super Cub emblem; LumiBrite on hands and indices
• Case back: See-through screw back with translucent red glass; Limited Edition and serial engraving
• Strap: Nylon NATO-style, 22mm lug width
• Water resistance: 100 metres (10 bar)
• Weight: Approximately 95g

Frequently asked questions

What is the water resistance of the Seiko SRPJ75?

The SRPJ75 is rated to 100 metres (10 bar). That covers rain, hand washing and swimming in normal conditions. It is not a 200m ISO dive instrument like many Prospex models — rinse after salt water and avoid operating the crown underwater.

What movement does the SRPJ75 use?

It uses Seiko’s Caliber 4R36 automatic with day-date, about 41 hours of power reserve, hand-winding and a hacking seconds hand. This is the same practical movement found across much of the modern Seiko 5 Sports range.

Is the SRPJ75 suitable for everyday wear?

Yes. The 42.5mm hard-coated case, NATO strap and 100m rating make it a solid daily sports watch. The collab dial is busier than a plain black Seiko 5, so it reads more as a character piece than a stealth beater — which is the point of the Super Cub edition.

How does the SRPJ75 compare to a standard Seiko 5 Sports (SRPD-style)?

Case size, 4R36 movement, Hardlex crystal and 100m WR sit in the same family as common SRPD-style 5 Sports models. The SRPJ75 adds the Honda Super Cub dial design, black hard-coated case, translucent red display back, NATO strap and a fixed limited production of 5,000 pieces.

Where can I buy the Seiko SRPJ75 in Australia?

Chronospride stocks authentic SRPJ75 Super Cub limited editions for Australian delivery. We inspect watches before dispatch. Free shipping Australia-wide on eligible orders.

Authentic stock, inspected before dispatch. Free shipping Australia-wide on eligible orders. Covered by Chronospride’s 12 months warranty, handled by our team. See our authenticity and warranty page.