Seiko · Mechanical
Strap for Mechanical Stainless Stainless Steel / Blue / Bracelet
Takes 20 mm straps. Verified lug width, the straps that fit this model, and answers to the most common questions.
Lug width
20mm
Lug width20 mm
Case diameter42 mm
ReferenceSRPA29
FamilyMechanical
MovementSeiko caliber 4R35
Hours, Minutes, Seconds | Date
CaseStainless Steel
Straps for the Mechanical SRPA29
Selected for the 20 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
The Mechanical SRPA29, seen from the bench
The Seiko SRPA29 belongs to the legendary Mechanical family, representing Seiko's tradition of reliable and legible movements. The watch features a 42mm stainless steel case housing the caliber 4R35 manual-winding movement with date function, oscillating at 21,600 vibrations per hour for precision within ±20 seconds per month. The 20mm lug width is a proportionally calculated dimension that ensures harmonious integration between the case and strap attachment points.
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