Strap for Royal KonTiki GMT Full Black

The lug width of the 7740.43.41.1289 is 22mm. This measurement must be verified internally from lug to lug. It is a critical specification: a 20mm or 24mm strap will not fit correctly, compromising both aesthetics and durability.

There is no universally 'best' strap, but rather logical choices depending on context. For daily elegance and noble ageing: alligator or shell cordovan with vegetable tanning. For sports versatility: vegetable-tanned calf or NATO. For humid or marine environments: synthetic rubber resistant to salt water.

Remove the old strap by gently depressing the spring bars from both sides using a small tool or needle. Align the new strap perfectly with the lugs, then reinsert the spring bars. The fit must be precise but without excessive force: if it encounters significant resistance, the strap is not genuine 22mm.

Yes, provided the strap is genuinely 22mm. However, verify that the strap features adequate shoulder height to cover the lug surface properly. Low-quality straps may be unsuitable despite nominal 22mm specification.

A quality leather strap, with moderate use and regular care, typically lasts 3-5 years before requiring replacement. Durability is conditioned by perspiration, sun exposure, frequency of use, and tanning type: vegetable tanning ages nobly but wears faster than cordovan.