2026-05-25
Best Watch Straps for the Seiko SKX009
Best Watch Straps for the Seiko SKX009
The Seiko SKX009 is the most visually distinct SKX ever made — and the most photographed. Where the SKX007 is defined by its all-black monochrome, the SKX009 introduces colour: a navy blue dial and a red and blue Pepsi bezel that gives the watch its identity and its nickname. The Pepsi colourway — red upper half, blue lower half — references the same GMT watch aesthetic that made the Rolex GMT-Master one of the most recognised watch designs in the world. On the SKX009, it does so at a fraction of the price and with a character that is entirely its own.
The Pepsi bezel on the SKX009 is an aluminium insert, not ceramic. This means it will fade and scratch over time, developing a patina that the collector community has embraced rather than lamented. Chronometer Check's reviewer deliberately aged a Pepsi bezel insert with bleach to accelerate the fading process — the worn, patinated Pepsi bezel has become an aesthetic goal rather than a sign of neglect. A faded Pepsi bezel on a well-worn SKX009 is a watch that has clearly been used for its intended purpose.
Everything else is SKX: the same 7S26 automatic movement with 40-hour power reserve, 200m water resistance, screw-down crown at 4 o'clock, drilled lugs, exhibition caseback, and the same essentially bulletproof construction. The SKX009 was discontinued in 2019 alongside the SKX007, and both remain widely available secondhand.
Seiko SKX009 Strap Size
The Seiko SKX009 uses 22mm watch straps lugs — confirmed by BespokeUnit's review ("strap size of 22mm between the lugs"), Strap Mill Canada ("22mm lug width"), and eBay product specification ("Lug Width: 22mm"). 42.5mm case, 13.4mm thick, 46mm lug-to-lug. Drilled lugs — spring bar changes using a fork tool through the lug holes.
SKX009K1 (rubber strap) — 22mm watch straps. SKX009K2 (Jubilee bracelet) — 22mm watch straps. SKX009J (Japan-market rubber strap) — 22mm watch straps. SKX175 (North American market variant) — 22mm watch straps.
All SKX009 references use 22mm watch straps standard spring bar lugs. The SKX013 uses 20mm — these are not interchangeable.
The Pepsi Colour Logic — How to Choose Straps
The SKX009's Pepsi bezel creates a specific colour dynamic that no other SKX watch has. The red and blue bezel combined with the navy blue dial gives the watch three active colours — red, blue, and the silver-white of the bezel scale — all before any strap is added. This creates a specific set of strap logic:
Temperature: The navy blue dial and blue bezel are cool. Red is warm. Warm-temperature straps create contrast with the cool dial. Cool-temperature straps create tonal coherence.
The warm contrast approach: Brown leather, tan suede, warm brown rubber — the warmth of the strap reads against the cool blue dial and references the red of the bezel. The most celebrated SKX009 leather combinations all use warm brown.
The cool coherence approach: Navy nylon, black rubber — the strap continues the cool maritime palette of the dial and bezel. Clean and composed.
The colour accent approach: Red nylon or red accent stripes — pulling the red of the bezel down onto the wrist. Bold and specifically Pepsi-coherent.
Best Rubber Straps for the Seiko SKX009
Seiko ships the SKX009K1 on rubber as standard — the factory validation of rubber as the primary SKX009 material.
Tropical style FKM in black at 22mm watch straps — the most celebrated SKX009 rubber combination. The vintage basket-weave patterns reference the same late 1960s dive watch culture as the SKX's design. Black tropical rubber on the navy blue dial creates a cool, unified palette where the Pepsi bezel provides all the visual colour contrast needed.
Brown tropical FKM at 22mm watch straps — the warm contrast approach in rubber. Brown tropical rubber against the navy blue dial is the most striking temperature contrast available on the SKX009 — warm aged rubber on a cool maritime watch. The community identifies this as one of the most distinctive SKX009 combinations.
Classic FKM rubber in black at 22mm watch straps — the most practical active upgrade from the factory rubber strap.
Navy FKM rubber at 22mm watch straps — the cool coherence approach. Navy rubber on the navy dial creates a tonal combination where the Pepsi bezel is the sole accent.
Best Nylon Straps for the Seiko SKX009
Single-pass nylon — Original at 22mm watch straps with the CNS solid buckle. Most appropriate SKX009 Pepsi colourways:
- Navy — the cool coherence approach. Navy nylon continues the blue palette of the dial and bezel. Maritime, composed, coherent.
- Black — the most minimal. The Pepsi bezel provides all the colour; black nylon stays out of its way.
- Black and red — the colour accent approach. Pulling the red of the Pepsi bezel down onto the strap creates a specifically Pepsi-coherent combination that references the watch's own identity.
- Black and grey — the most understated collector combination.
- Olive / khaki — for the most operational field-diver character, contrasting warm earth tones against the cool blue dial.
Marine Nationale elastic at 22mm watch straps — the most comfortable SKX009 daily wear option. Navy Marine Nationale is the most coherent colour choice — French Navy blue on a watch with a blue dial and maritime character. Black Marine Nationale for maximum contrast.
RAF single-pass nylon at 22mm watch straps — for the most specifically British military heritage combination.
Canvas at 22mm watch straps in olive — for a vintage expedition diver character.
Paratrooper elastic at 22mm watch straps — the most comfortable daily option.
Best Leather Straps for the Seiko SKX009
Leather on the SKX009 creates the warm contrast combination that the collector community consistently identifies as the most rewarding transformation — the Pepsi dial and bezel against warm brown leather creates a warm-cool dynamic that works better on the SKX009 than on the all-black SKX007.
Brown vintage two-stitch calfskin at 22mm watch straps — the most celebrated SKX009 leather combination. The warm brown leather against the navy blue dial and Pepsi bezel creates a warm-cool contrast that is the most discussed SKX009 aftermarket combination in the collector community. The two-stitch construction references the 1968 dive watch era the SKX draws from. Multiple reviewers identify warm brown leather as the transformation that most reveals the SKX009's character as a dress-sport piece rather than a pure tool watch.
Dark brown padded calfskin at 22mm watch straps — the most substantial everyday leather for the SKX009's 13.4mm case thickness.
Tan suede at 22mm watch straps — the warm contrast approach in suede. Tan against the navy blue dial creates the most relaxed version of the warm-cool combination.
Navy calfskin at 22mm watch straps — the cool coherence approach in leather. Navy leather on the navy dial creates a composed, tonal formal combination.
Classic flat calfskin in black at 22mm watch straps — the most minimal formal combination.
Dark brown suede at 22mm watch straps — for smart-casual contexts.
SKX007 vs SKX009 — The Strap Perspective
Both the SKX007 and SKX009 use 22mm watch straps — the same straps fit both watches. The strap logic differs significantly:
SKX007 (black dial, black bezel) — warm brown leather creates maximum temperature contrast against an all-cool watch. Any colour works because the watch itself has no colour.
SKX009 (navy blue dial, Pepsi bezel) — the watch already has colour. Warm brown leather creates warm-cool contrast with the cool blue. Navy nylon creates tonal coherence. Black and red nylon pulls the bezel colour down onto the strap. Every strap choice is a colour decision.
The SKX009 rewards more deliberate strap choices than the SKX007 — the Pepsi bezel makes every combination either coherent or discordant, and getting it right is more satisfying.
The Seiko SKX Cluster
Seiko SKX007 / Prospex — 22mm watch straps. Black dial, black bezel.
Seiko SKX009 — 22mm watch straps. Navy dial, Pepsi bezel.
Seiko SKX013 — 20mm watch straps. The 38mm midsize SKX.
Seiko Turtle — 22mm watch straps.
Seiko Captain Willard — 20mm watch straps.
Recommended Combinations
Most celebrated — black tropical FKM at 22mm watch straps — vintage rubber on the Pepsi diver.
Most warm contrast — brown tropical FKM at 22mm watch straps — warm rubber on the cool blue dial.
Most celebrated leather — brown vintage two-stitch calfskin at 22mm watch straps — the warm-cool contrast combination.
Most Pepsi-coherent nylon — black and red single-pass nylon at 22mm watch straps — pulling the bezel colours onto the strap.
Most maritime — navy Marine Nationale elastic at 22mm watch straps — French Navy blue on the blue dial.
Most comfortable daily — Marine Nationale elastic at 22mm watch straps.
Frequently Asked Questions
What size strap does the Seiko SKX009 take? 22mm watch straps — confirmed by BespokeUnit, Strap Mill Canada, and eBay product specification. All SKX009 references use 22mm drilled lugs.
What is the best strap for the Seiko SKX009 Pepsi? Brown vintage two-stitch calfskin at 22mm watch straps for the most celebrated warm-cool contrast — warm brown against the navy blue Pepsi dial. Black tropical FKM for the most collector-appropriate active combination. Black and red nylon for the most specifically Pepsi-referencing fabric choice.
Why is the SKX009 called the Pepsi? The SKX009's red and blue unidirectional bezel resembles the colour scheme of the Rolex GMT-Master's "Pepsi" bezel — red upper half, blue lower half — which Rolex developed in the 1950s for Pan Am pilots needing to track a second time zone. The nickname has been applied to any red and blue bezel watch across multiple brands since. On the SKX009, the Pepsi bezel is an aluminium insert that develops a patina — fading and scratching over time — which the collector community embraces as part of the watch's character.
Does the SKX009 take the same strap as the SKX007? Yes — both the SKX007 and SKX009 use 22mm watch straps. The same strap fits both. The strap colour logic differs significantly — see the SKX007 vs SKX009 section above.
What is the SKX175? The SKX175 is the North American market variant of the SKX009. The only functional difference is the dial text — "Made in MALAYSIA" rather than "Made in JAPAN" on the J suffix models. The strap size is identical at 22mm watch straps.
All CNS straps for the Seiko SKX009 are available at 22mm watch straps. Standard delivery worldwide. 30-day returns.