2026-05-02
Best Watch Straps for the Seiko Willard
Best Watch Straps for the Seiko Willard
The Seiko Willard is the most cinematic watch in the Seiko catalogue — and one of the most cinematic watches ever made. In Francis Ford Coppola's Apocalypse Now (1979), Martin Sheen wore a Seiko 6105-8110 on his wrist as Captain Benjamin Willard, the Army special operations officer sent upriver into Cambodia to terminate Colonel Kurtz. The watch is visible throughout the film — on Willard's wrist in the opening hotel room sequence, during the river patrol, and across every key scene of the film. It became so associated with the character that the entire watch lineage now carries his name.
The Seiko SPB151 and SPB153, introduced in 2020, are the most accessible modern reissue of the 6105 design. The SPB151 presents the black dial and bezel on a steel bracelet; the SPB153 presents an olive green sunburst dial and bezel on a silicone strap — the variant that most directly references the jungle context of Apocalypse Now. Both use the same 6R35 movement with 70-hour power reserve, sapphire crystal, and 200m water resistance that define the modern Willard.
This guide covers both references with the strap combinations that best reference the watch's cinematic heritage, its military context, and its tool watch character.
Seiko Willard Strap Size
Both Seiko Willard references use 20mm lugs.
SPB151 (black dial, steel bracelet) — 20mm lugs. Standard spring bars.
SPB153 (olive green dial, silicone strap) — 20mm lugs. Standard spring bars.
SBDC109, SBDC111 (JDM equivalents) — 20mm lugs.
SLA033 (premium limited reissue) — 20mm lugs.
Order 20mm for any Willard reference. The 42.7mm case uses a compact 46.6mm lug-to-lug measurement — the integrated lug design means the watch wears significantly smaller than its case diameter suggests.
The Apocalypse Now Connection — Why It Matters for Strap Choice
The original Seiko 6105-8110 worn by Martin Sheen in Apocalypse Now was a Vietnam-era military diver's watch. It was not a prop acquired specifically for the film — US servicemen in Vietnam actually wore Seiko dive watches because they were affordable, reliable, and durable in the jungle conditions of Southeast Asia. The 6105 was genuine military field equipment, not a costume accessory.
This context creates a specific and historically grounded strap logic for the Willard. The most resonant combinations are those that reference the same world — the Vietnamese jungle, the military river patrol, the operational tool watch used in extreme conditions. Olive, khaki, and military nylon. Tropical rubber. Dark leather worn hard. These are not aesthetic choices borrowed from fashion; they are historically coherent responses to the watch's own story.
The SPB153's olive green dial makes the jungle reference explicit and inescapable. It is the most intentional colour choice Seiko has made for a reissue in the modern Prospex era — olive green specifically references the military field equipment of the film's context. The strap choices that honour this choice are the ones that extend the olive palette into the strap rather than contradicting it.
Best Rubber Straps for the Seiko Willard
FKM rubber is the most practical material for a 200m dive watch worn actively — and on the Willard, the tropical rubber pattern creates the most historically specific combination available.
Tropical style FKM in black at 20mm — the most historically resonant rubber combination for the Willard. As with the Seiko Turtle, the tropical rubber pattern references the 1960s and 1970s dive watch rubber of the Willard's design era. The 6105-8110 worn by Martin Sheen in Apocalypse Now was a watch from exactly this period. Black tropical FKM on the SPB151 connects the modern reissue to its original context directly.
Olive green tropical FKM at 20mm — the most specifically Apocalypse Now combination. Olive tropical rubber on the SPB153's olive green dial creates a fully cohesive, monochromatic military-green combination. This is the combination that most directly references the jungle patrol context of the film — the olive strap, the olive dial, the brushed steel case. It is the combination Apocalypse Now fans choose immediately when they discover it exists.
Classic FKM rubber in black at 20mm — the most practical active choice for diving and water use.
Green FKM rubber at 20mm — for the SPB153 in a fully tonal olive-green combination. The green rubber echoes the dial colour and creates a military-monochromatic effect.
Best Nylon Straps for the Seiko Willard
Single-pass nylon is the most operationally coherent strap for the Willard — and the combination that most directly references the military field watch context of the original 6105. US servicemen in Vietnam wore their Seikos on exactly this kind of nylon construction.
Single-pass nylon — Original at 20mm with the CNS solid buckle. Most appropriate Willard colourways:
- Olive / khaki — the single most appropriate combination for the Willard. Olive single-pass nylon on the SPB153 is the combination that watch collectors, film enthusiasts, and military history readers consistently identify as the correct Apocalypse Now pairing. Olive nylon, olive dial, olive context.
- Black — the most versatile option for the SPB151. Black single-pass on the black dial Willard creates a fully operational, purposeful combination.
- Olive drab — for the darkest, most specifically military olive tone on either reference.
- Khaki — for a slightly warmer, more desert-adjacent military tone.
- Navy — for a naval rather than jungle military aesthetic.
Marine Nationale elastic at 20mm — one reviewer who owns the Willard specifically mentions choosing a Marine Nationale strap as their first aftermarket purchase. The elastic construction conforms continuously through active use and suits the Willard's operational character directly. Navy or olive for the most coherent colour choices.
Paratrooper elastic at 20mm — the CNS founder-designed elastic single-pass. The most comfortable daily-wear option and the most operationally named strap in the CNS range for a watch with military field credentials.
Ribbed nylon at 20mm — the corded texture variant adds grip and visual texture appropriate for a tool watch worn in demanding conditions.
Canvas at 20mm — in olive or khaki. Canvas references the military field equipment context of the Willard's heritage directly — the same world as canvas tents, canvas packs, and canvas field gear.
Best Leather Straps for the Seiko Willard
Leather on the Willard is the most transformative combination — it converts the military dive tool into a characterful everyday watch that works far beyond its operational context. The Willard's bold case and clear dial suit leather with more authority than most dive watches.
Vintage two-stitch calfskin in cognac or tan at 20mm — the most widely admired Willard leather combination. The warm leather against the SPB151's black dial or the SPB153's olive green dial creates a warm contrast that reads as a film prop from a different era — worn, characterful, specific. On the SPB153, cognac leather creates a warm complement to the olive green dial.
Dark brown padded calfskin at 20mm — the most substantial everyday leather. The padded construction suits the Willard's 13.2mm case thickness proportionally.
Tan suede at 20mm — the most evocative vintage leather option. Tan suede on a Willard creates a combination that references worn military leather equipment — the kind of strap that has seen field use and carries the marks of it.
Classic black calfskin at 20mm — for the SPB151 in formal and smart-casual contexts where the dive watch needs to dress up without losing its character.
The SPB153 Olive Green — The Definitive Apocalypse Now Combination
The SPB153 olive green variant deserves its own section because the colour is so specifically intentional. Seiko chose olive green for this reference deliberately — it is not simply an alternative dial colour, it is a direct reference to the military olive drab of Vietnam-era field equipment. The colour is the content.
The strap choices that honour this intentionality are the olive-palette combinations that extend the dial's colour logic into the strap:
Most historically specific: Olive single-pass nylon — the closest possible reference to the operational nylon worn by US servicemen in Vietnam.
Most visually cohesive: Olive tropical FKM — olive rubber on an olive dial, referencing the same era of tropical rubber construction.
Most characterful: Cognac vintage two-stitch leather — warm leather against the olive dial, creating a combination that reads as a film costume from 1979.
Most comfortable: Marine Nationale elastic in olive — sustained operational comfort for a watch worn throughout the day.
Recommended Combinations by Reference
SPB151 (black dial) — olive single-pass nylon for the most operational combination; black tropical FKM for the most historically resonant rubber; cognac vintage two-stitch for the most characterful everyday leather. All at 20mm.
SPB153 (olive green dial) — olive single-pass nylon for the most specifically Apocalypse Now combination; olive tropical FKM for the most visually cohesive rubber; cognac leather for the warmest leather contrast. All at 20mm.
Both references — most comfortable — Marine Nationale elastic in olive or navy at 20mm.
Both references — most historically grounded — olive canvas at 20mm.
Frequently Asked Questions
What size strap does the Seiko Willard take? Both the SPB151 and SPB153 Seiko Willard references use 20mm lugs with standard spring bars. The JDM equivalents SBDC109 and SBDC111 also use 20mm. Order 20mm for any Willard reference.
What watch did Martin Sheen wear in Apocalypse Now? Martin Sheen wore a Seiko 6105-8110 as Captain Benjamin Willard in Apocalypse Now (1979). The Seiko SPB151 and SPB153 are the modern reissues of this reference — the reason the watch is known as the "Willard" in the collector community. For a strap that references the film's context, olive single-pass nylon at 20mm is the most appropriate choice.
What is the best strap for the Seiko Willard SPB153 olive green? Olive single-pass nylon at 20mm — the olive nylon references the military field watch context of the original 6105 directly and creates a tonal coherence with the SPB153's olive green dial. Olive tropical FKM for the most visually cohesive rubber alternative.
What is the best rubber strap for the Seiko Willard? Olive tropical FKM for the SPB153 — the olive rubber against the olive dial creates the most specifically Apocalypse Now combination available. Black tropical FKM for the SPB151 — referencing the 1970s dive watch rubber of the original 6105 era.
Does the Seiko Willard take the same strap as the Seiko Turtle? No — the Seiko Turtle uses 22mm lugs while the Seiko Willard uses 20mm. Order 20mm for the Willard and 22mm for the Turtle.