Strap for Seamaster Planet Ocean 600M Co-Axial 45.5 Chronograph Stainless Steel / Orange / Orange Rubber

The reference 2918.50.83 features a lug width of 22mm. This dimension is measured from shoulder to shoulder of the transverse spring bar pins, excluding the strap keeper. Do not confuse it with the visual clearance between the lugs; 22mm is the physical insertion space for the strap.

The choice depends on intended use: alligator with vegetable tanning offers classical elegance; Taurillon calf with natural patina ensures versatility and aesthetic ageing; rubber or caoutchouc are mandatory for intensive aquatic use. Shell cordovan is inadvisable for this model given its marine vocation.

Strap changes are performed via the transverse spring bar pins. Using a spring bar tool, gently depress the internal spring, lift one end, then extract the pin. Insert the new strap in reverse order. The procedure requires care but no specialised tools.

Yes, any 22mm width strap is compatible with the Planet Ocean 2918.50.83. You will find extensive selections of artisan 22mm straps online in leather, rubber, NATO and fabric, customisable for length, colour and stitching.

A premium leather strap, if subjected to frequent saltwater contact, lasts 2–3 years. If used occasionally in dry environments, it easily reaches 5–7 years. For regular diving, alternating with rubber straps or scheduling periodic maintenance is advisable.