Seiko · Prospex Divers
Strap for Prospex Diver Turtle Stainless Steel / Blue / Bracelet
Takes 22 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
Straps for the Prospex Divers SRP773 (aka: SRP773K1)
Selected for the 22 mm lug width · workshop selection
Recycled Nylon Military Strap — Grey with Red Stitching€52
Light Blue Recycled Military Strap with Red Stitching€52
Eco Recycled Nylon Military NATO Strap — Green with Green Stitching€52
Recycled Nylon Military NATO Strap — Red and Black Edges€52
Eco-Friendly Recycled Nylon Military NATO Strap — Green with Orange Edges€52
Frequently asked questions
What is the lug width of the Seiko Prospex Divers SRP773?
The Seiko Prospex Divers SRP773 features 22-millimetre lugs. This width is Seiko's standard specification for the 45mm case and ensures compatibility with all straps and bracelets conforming to this lug width. Always verify by measuring from the inner base of one lug to the other, parallel to the dial.
What is the best strap for the Seiko Prospex Divers SRP773?
There is no single "best" strap; the choice depends on intended use. For daily elegance, Tuscan leather with vegetable tanning develops character patina over time. For marine environments, ballistic nylon NATO or vulcanised rubber ensure water resistance. For professional versatility, alligator leather with regular texture scales offers refinement. All must respect the 22mm lug width compatibility.
How do you change the strap on a Seiko Prospex Divers SRP773?
Strap replacement on the SRP773 is performed via springbars positioned at each lug extremity. Remove the existing strap by gently releasing the springbar with a dedicated spring bar tool. Insert the springbar into the new strap and ensure it sits firmly in its grooves. Verify correct positioning before wearing the watch.
Are third-party aftermarket straps compatible with the SRP773?
Yes, provided the lug width is precisely 22 millimetres. Artisanal straps in Tuscan leather, shell cordovan, alligator, or technical materials are fully compatible. Always verify the seller's specifications: the lug width must match exactly the 22mm standard of the Prospex SRP773.
How long does a leather strap last on a Seiko Prospex Divers SRP773?
Durability depends on use, material, and maintenance. Tuscan leather with vegetable tanning typically lasts 3–5 years under normal conditions, developing characteristic patina. Alligator leather, more resilient, may last 5–7 years. Shell cordovan can reach 7–10 years. Constant saltwater exposure reduces lifespan; regular drying and protective treatment extend strap life.
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.
Request an appointment →Casati Milano · Via XX Settembre 15, Milan · by appointment only
