Grand Seiko
Mechanical SLGH002— lug 20mm
Grand Seiko Mechanical SLGH002: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Grand Seiko SLGH002The essential strap measurement.
Browse 20mm straps →SLGH002
Grand Seiko caliber 9SA5 Hours, Minutes, Seconds | Date
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Mechanical
FAQ
What is the lug width of the Grand Seiko Mechanical SLGH002?
The Grand Seiko SLGH002 features a lug width of 20 millimetres. This is the distance between the two lugs where the strap attaches. You can verify this measurement by measuring directly across the case with a ruler or digital calliper. This dimension is standard for mid-sized watches and accommodates any quality aftermarket strap manufactured to 20mm specifications.
What is the best strap material for the yellow gold Grand Seiko SLGH002?
Alligator leather in vegetable tanning remains the natural choice: the Madras or Nile grain texture creates a formal dialogue with the case geometry, whilst dark brown natural colour does not compete chromatically with yellow gold. Alternatively, English calf leather in vegetable tanning offers fine grain and patina that ages nobly over time. Shell cordovan from English cobblers represents a premium option for those who appreciate accelerated leather ageing.
How do I change the strap on the Grand Seiko SLGH002?
Remove the strap using a spring bar tool or small hammer and punch. Locate the tiny coil springs inside the lugs, insert the tool into the narrow channel, then lift slightly to relieve spring tension. The strap slides out sideways. To install a new strap, reverse the procedure: align the lugs with the holes, insert the spring, and secure it in place. This procedure requires care to avoid scratching the yellow gold case.
Can I use an aftermarket compatible strap on this model?
Yes, any strap constructed to 20mm specifications is compatible with the Grand Seiko SLGH002. Compatibility is guaranteed by identical lug width. However, material selection significantly impacts final aesthetics: for a yellow gold case, noble leathers (alligator, shell cordovan, calf in vegetable tanning) are recommended, paired with austere finishes that do not compete chromatically with precious metal.
How long does a leather strap last on a daily-worn watch?
A quality leather strap (alligator, shell cordovan, calf in vegetable tanning) subjected to daily wear has an average lifespan of 4-6 years before replacement is required. Durability depends on ambient humidity, frequency of wear, strap maintenance, and the type of tanning used. Vegetable-tanned leathers tend to age nobly, developing patina that can extend aesthetic appeal beyond the functional threshold. Casati Milano offers an 18-month warranty on all custom-made straps.
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 →By appointment only · Milan
The atelier's website: casatimilano.com