2026-05-25
Best Watch Straps for the Seiko SKX013
Best Watch Straps for the Seiko SKX013
The Seiko SKX013 solves a problem the SKX007 cannot. The standard SKX — the 007 at 42.5mm — is too large for a significant portion of the wrists that want to wear it. The SKX013 takes everything that makes the SKX series compelling and scales it to 38mm: the same 7S26 automatic movement with 40-hour power reserve, the same 200m water resistance, the same screw-down crown, the same unidirectional rotating bezel, the same exhibition caseback, and the same essentially indestructible reputation — in a case that wears proportionally on wrists that the 007 overwhelms.
The proportional differences are specific and meaningful. Where the SKX007 has 22mm lugs and a 46mm lug-to-lug, the SKX013 has 20mm lugs and a 44mm lug-to-lug. The 13mm thickness is the same. The movement is the same. The WristWhisperer reviewer who owned both identified the SKX013's 20mm lug width as a direct advantage — more strap options available at 20mm than at 22mm, with access to the same rotation of leather, nylon, and rubber straps as the most popular watches in the world rather than the more specialist 22mm market.
The SKX013 was discontinued alongside the broader SKX line. It remains widely available secondhand and through grey market channels, and prices have risen modestly from the original retail. It is consistently cited alongside the Seiko SNK809 as one of the essential entry-level Seiko automatics — the field watch and the diver.
Seiko SKX013 Strap Size
The Seiko SKX013 uses 20mm watch straps lugs — confirmed by BespokeUnit's specification review ("20mm between the lugs"), namokiMODS strap guide ("SKX013 has a 20mm lug width"), and WristWhisperer's owner review ("20mm lug width").
SKX013K1 (black rubber wave strap) — 20mm watch straps. 38mm case, 13mm thick, 44mm lug-to-lug. SKX013K2 (Jubilee bracelet) — 20mm watch straps. Same case dimensions.
All SKX013 references use 20mm watch straps standard spring bar lugs. Order 20mm watch straps for any SKX013 reference.
The key difference from the SKX007: The SKX007 uses 22mm lugs. The SKX013 uses 20mm lugs. These are not interchangeable — order the correct size for your specific reference.
What Seiko Ships With — Two Factory Choices
SKX013K1 — Seiko's rubber "wave" strap. The factory validation for rubber as an appropriate SKX013 material.
SKX013K2 — Seiko's Jubilee stainless steel bracelet. The factory validation for a more refined presentation. The WristWhisperer reviewer noted the bracelet "looks nice enough but doesn't offer anything particularly special" — the aftermarket strap opportunity is significant.
Best Rubber Straps for the Seiko SKX013
Seiko ships the SKX013K1 on rubber as standard — the brand's clearest validation of rubber as the primary dive watch material.
Tropical style FKM in black at 20mm watch straps — the most celebrated SKX013 rubber combination. The vintage basket-weave and honeycomb surface patterns reference the late 1960s dive watch culture that the SKX's design draws from. On the SKX013's black dial, black tropical FKM creates a unified dark vintage combination that the collector community consistently identifies as the most rewarding SKX013 aftermarket pairing.
Brown tropical FKM at 20mm watch straps — for the most warm and most aged vintage character. Brown tropical on the black dial creates a temperature contrast that references aged 1960s dive watch rubber.
Classic FKM rubber in black at 20mm watch straps — the most practical active choice and the closest equivalent to the factory rubber strap in premium FKM.
Grey FKM rubber at 20mm watch straps — for a composed, subtle combination with the brushed steel case.
Best Nylon Straps for the Seiko SKX013
Single-pass nylon — Original at 20mm watch straps with the CNS solid buckle. Most appropriate SKX013 colourways:
- Olive / khaki — the most specifically dive and field watch-appropriate combination for the SKX013's military-adjacent character
- Black — the most minimal, suits the black dial directly
- Navy — for a maritime, diving-heritage combination
- Admiralty Grey — for the most composed operational colourway
- Black and grey — the most understated collector combination
Marine Nationale elastic at 20mm watch straps — the most comfortable SKX013 daily wear option. The French Navy combat swimmer heritage connects directly to the SKX013's own professional dive specification. Navy or black.
RAF single-pass nylon at 20mm watch straps — for the most specifically British military heritage combination.
Canvas at 20mm watch straps in olive — for a vintage expedition character.
Paratrooper elastic at 20mm watch straps — the most comfortable daily option.
Best Leather Straps for the Seiko SKX013
The SKX013's 38mm case and 44mm lug-to-lug make it more proportionally suited to leather than the larger SKX007 — the smaller case wears leather like a dress-sport watch rather than a diving tool. The WristWhisperer reviewer identified this as one of the SKX013's key advantages.
Brown vintage two-stitch calfskin at 20mm watch straps — the most celebrated SKX013 leather combination. The warm brown and two-stitch construction reference the 1968 dive watch era that the SKX's design draws from. On the black dial, warm brown creates the warm-cool contrast that reviewers consistently identify as the most rewarding leather pairing for the SKX013.
Dark brown padded calfskin at 20mm watch straps — the most substantial everyday leather for the SKX013's 13mm case thickness.
Classic flat calfskin in black at 20mm watch straps — the most formal combination.
Tan suede at 20mm watch straps — the most relaxed leather option.
Dark brown suede at 20mm watch straps — for smart-casual and weekend contexts.
SKX013 vs SKX007 — The Strap Perspective
The key practical difference from a strap perspective:
- SKX007 — 22mm watch straps. Larger case, more bracelet-adjacent strap market.
- SKX013 — 20mm watch straps. Smaller case, the most widely stocked strap size in the world.
The WristWhisperer reviewer sold all their 22mm straps when they switched to the SKX013 — the 20mm market is larger, more varied, and more accessible. Every CNS leather, rubber, and nylon strap recommendation for the Seiko Turtle, Omega Seamaster, Tudor Black Bay 41, and dozens of other watches is directly applicable to the SKX013.
The Seiko Prospex Cluster
Seiko SKX007 / Prospex — 22mm watch straps.
Seiko Turtle — 22mm watch straps.
Seiko Captain Willard — 20mm watch straps.
Seiko Prospex SPB317 — 20mm watch straps.
Seiko Prospex Speedtimer — 20mm watch straps.
Seiko SKX013 — 20mm watch straps. The midsize SKX diver.
Recommended Combinations
Most celebrated — black tropical FKM at 20mm watch straps — vintage rubber on the midsize diver.
Most characterful leather — brown vintage two-stitch calfskin at 20mm watch straps — warm leather on the black dial.
Most operational — olive single-pass nylon at 20mm watch straps.
Most warm vintage — brown tropical FKM at 20mm watch straps.
Most comfortable daily — Marine Nationale elastic at 20mm watch straps.
Frequently Asked Questions
What size strap does the Seiko SKX013 take? 20mm watch straps — confirmed by multiple independent sources. The SKX013 has a 38mm case with 20mm lug width. This is different from the SKX007 which uses 22mm lugs.
What is the best strap for the Seiko SKX013? Black tropical style FKM at 20mm watch straps — the vintage basket-weave pattern references the same dive watch era as the SKX's design. Brown vintage two-stitch leather for the most characterful everyday transformation.
Does the SKX013 take the same strap as the SKX007? No — the SKX013 uses 20mm watch straps and the SKX007 uses 22mm watch straps. They are not interchangeable. Always confirm your specific reference before ordering.
Why does the SKX013 have 20mm lugs when the SKX007 has 22mm? The SKX013 has a smaller 38mm case compared to the SKX007's 42.5mm. The lug width scales proportionally with the case — 20mm suits the 38mm case in the same way that 22mm suits the larger case. The 20mm lug width is actually an advantage — it is the most widely stocked strap width in the world, giving SKX013 owners access to the largest possible aftermarket strap selection.
Is the Seiko SKX013 discontinued? Yes — the SKX013 was discontinued alongside the broader SKX line. It remains available through grey market dealers and secondhand sellers. The Seiko Prospex SPB317 is the closest current production equivalent in the Seiko range.
All CNS straps for the Seiko SKX013 are available at 20mm watch straps. Standard delivery worldwide. 30-day returns.