Strap for Oris Aquis 01 733 7731 4995

The lug width of the Oris Aquis 01 733 7731 4995 is 18mm. This measurement represents the distance between the two pins that anchor the strap to the case and is constant on both sides of the watch. It is essential not to confuse this measurement with the case diameter (37mm): they are two independent parameters. Always verify with a digital calliper before purchasing an aftermarket strap.

The choice of strap depends on the actual use of the watch. For formal elegance with water resistance: leather with vegetable tanning or alligator. For frequent diving and sports use: FKM rubber or NATO straps in ballistic fabric. For daily versatility: aged calf leather that develops patina over time. Milano Straps offers personalised 18mm straps in all these materials, ready for shipment.

Changing the strap requires the use of a spring bar removal tool. Insert the bifurcated tip of the tool into the lateral grooves of the lug, gently compress the internal spring and, once the pin is free, remove the original strap. Repeat the operation on the opposite side. To install the new 18mm strap, align the spring bar pins with the lug holes and press firmly until you hear the spring snap into place. Avoid forced leverage that could damage the case.

Yes, any strap with an 18mm lug width is compatible with the Oris Aquis 01 733 7731 4995. Milano Straps supplies 18mm straps in leather, NATO, rubber and other materials, all tested to fit perfectly to the original lugs without requiring modifications. Always verify that the strap is specifically sized for 18mm to avoid play or misalignment.

The lifespan of a vegetable-tanned leather strap varies depending on use and environmental conditions. With moderate use (3-5 times per week) and with proper care, an artisanal quality strap will last 18-36 months. Frequent exposure to salt water, chlorine or constant humidity significantly reduces longevity. FKM rubber straps have a longer lifespan (3-5 years) but require regular cleaning. Natural leather develops patina and becomes softer over time, whilst water damage is irreversible.