Strap for Seebataillon GMT Blue / Strap

The lug width (strap width) of the M1-28-62-KB is 22mm. This measurement is critical for selecting compatible aftermarket straps. Correct measurement is taken by placing a ruler between the two inner lugs, from wall to wall, without including the thickness of the lugs themselves.

For the M1-28-62-KB, a vegetable-tanned leather strap, particularly Tuscan or high-quality European tanning, offers the ideal balance between aesthetics and functionality. For intensive diving use, a grey or black FKM rubber strap ensures superior grip and salt-water resistance. For formal wear, an alligator leather strap in dark tones preserves the German sobriety of the design without excess.

Strap replacement on the M1-28-62-KB is accomplished by removing the two side lugs using a spring bar tool. Position the tool on the lug groove, apply gentle pressure, and slide the lug inward towards the watch case. Once released, the existing strap disengages easily. To install a new strap, align the strap holes with the lugs and snap them into position, verifying they are fully secured.

Any strap with a 22mm lug width is compatible with the M1-28-62-KB. This includes vegetable-tanned leathers, shell cordovan, NATO fabric straps, technical rubber (FKM, silicone), and exotic leathers (alligator, crocodile). The selection available online is extensive; we recommend verifying total strap length relative to wrist circumference.

A quality vegetable-tanned leather strap, if used occasionally and kept dry, has an average lifespan of 3–5 years. With intensive use and constant moisture exposure, longevity reduces to 18–24 months. Shell cordovan straps, due to fibre density, reach 5–7 years even with moderate maintenance. FKM rubber, if not exposed to prolonged direct UV radiation, maintains elasticity for 4–6 years.