Grand Seiko
Mechanical SBGH201— lug 20mm

The lug width of the SBGH201 is 20 millimetres. This specification is critical for selecting compatible straps: measure the internal distance between the two case lugs using a calliper to verify accuracy. A 20mm lug width allows the strap to sit naturally on the case without creating tension that could shorten the longevity of the timepiece.

The most appropriate strap is alligator with vegetable tanning, as its natural appearance dialogues visually with the bronze dial. Alligator grain respects the case proportions without competing for visual attention. Aged calf leather with vegetable tanning represents a premium alternative, developing a patina over time that harmonises with the contemplative character of the watch.

Position the watch on a soft surface with the case facing upwards. Use a spring bar tool to apply gentle vertical pressure on the lug spring, retracting it inward. Once the spring is released, remove the old strap and insert the new one by first aligning one end of the spring, then gently pressing the opposite end. Avoid horizontal movements that could deform the spring.

Yes, any strap with a 20mm lug width is compatible with the SBGH201. Ensure that the strap thickness does not exceed the original to avoid overlaps on the case. Artisanal straps in alligator, calf or natural rubber offer quality and durability equivalent to original timepieces, with the advantage of customisation in sizes, initials and stitching thread selection.

A strap made from vegetable-tanned leather lasts between 3 to 5 years with regular maintenance, depending on usage frequency and moisture exposure. Alligator and shell cordovan remain functional beyond 7 years due to their intrinsic density. Vulcanised natural rubber achieves 5-7 years of use. Monthly cleaning with a soft damp cloth and semi-annual conditioning with natural wax significantly extends longevity.