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Seiko · Prospex Land

Strap for Prospex Land SUN049P1 Stainless Steel / Black / Bracelet

Takes 24 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.

Lug width

24mm
24 mm strapsAll Seiko
Lug width24 mm
Case diameter46 mm
ReferenceSUN049P1
FamilyProspex Land
MovementSeiko caliber 5M85 Additional 12 hours Hand (adjustable), hours, minutes, seconds | date
CaseStainless Steel

Spring bar

Swiss Standard universal spring bars

The right category for this model · 316L steel, all lug widths 13–26 mm

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Straps for the Prospex Land SUN049P1

Selected for the 24 mm lug width · workshop selection

All 24 mm straps →

The Prospex Land SUN049P1, seen from the bench

The Seiko Prospex Land SUN049P1 is a tactical field instrument featuring a 45.60mm stainless steel case with satinized and polished finishing, resistant to corrosion and scratches. It houses the Seiko caliber 5M85 movement with ±25 seconds per month precision and 40-hour power reserve, equipped with an independent 12-hour hand for dual time zone tracking and a date window. The 24mm lug width accommodates wrists from 16cm to 20cm, and the watch is water-resistant to 200 meters with a hardlex crystal and monotonic 12-hour bezel, representing an evolution of Seiko's military chronograph heritage.

Frequently asked questions

What is the lug width of the Seiko Prospex Land SUN049P1?

The <a href="/pages/termine-glossario/misura-ansa">lug width</a> of the Seiko Prospex Land SUN049P1 is 24mm, measured centre-to-centre between the spring bar seats on the case. This dimension ensures optimal proportions on the 45.60mm case and compatibility with wrists ranging 16–20cm without requiring extension straps.

Which strap is best for the Seiko Prospex Land SUN049P1?

For a Prospex Land of this calibre, we recommend <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> leather in tobacco brown or black, which maintains the model's tactical heritage without compromise on artisanal craftsmanship. Alternatively, a military grey-green NATO offers practicality and longevity identical to the movement, eliminating concerns of accidental water exposure.

How do I change the strap on the Seiko Prospex Land SUN049P1?

Position the watch on a soft surface. Locate the two lug seats (at 3 and 9 o'clock). Using a spring bar remover tool, apply gentle inward pressure on the metal ring of the spring bar attachment until it yields, extracting the spring bar. Repeat on the other side. Insert the new strap by aligning the side holes with the spring bar, reinserting it into the seats until it clicks into place.

Is an aftermarket strap compatible with the SUN049P1?

Yes, any strap with a 24mm <a href="/pages/termine-glossario/misura-ansa">lug width</a> is physically compatible. However, we recommend verifying strap thickness: the SUN049P1 tolerates straps from 3.5mm to 4.5mm without generating visual asymmetries on closely-profiled lugs. Avoid oversized or excessively thin straps.

How long does a leather strap last on the Seiko Prospex Land SUN049P1?

A well-maintained <a href="/pages/termine-glossario/concia-vegetale">vegetable-tanned</a> leather strap lasts 4–7 years in daily non-intense use, and 2–3 years with frequent tactical deployment (swims, perspiration, humidity). The vegetable leather develops a natural patina that enhances aesthetics in the first year; deterioration begins when the leather loses suppleness at lug attachment points. NATO and FKM rubber straps have a longevity exceeding 8–10 years if rinsed regularly and air-dried.

The next step

The right strap isn't chosen. It is built, together.

From the atelier appointment to delivery, every step is made for those who know that things done well take time. Rare leathers, one piece at a time, eighteen months of warranty.

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Casati Milano · Via XX Settembre 15, Milan · by appointment only