Strap for Aquis Date 43.5 Stainless Steel / Black / Bracelet

The lug width for this Oris model is precisely 20mm. This dimension refers to the distance between the inner edges of the two lugs on the case. It is essential to verify this specification with a digital calliper before purchasing an aftermarket strap, as the integrated PEB (Projection Extension Bracelet) attachment system does not tolerate dimensional variations.

The choice depends on intended use. For formal elegance: alligator or crocodile in dark brown or cognac tones. For intensive operational use: NATO in Cordura textile in navy blue or black. For diving environments: FKM rubber in grey or black for complete water resistance. For natural aesthetic ageing: vegetable-tanned calf leather, which develops a silver patina over time.

Use a spring bar tool to remove the spring bars from the case lugs. Insert the flat end of the tool beneath the spring, applying downward pressure to compress the spring. Once retracted, extract the spring bar and the old strap. For the new strap, insert the spring bar into the lug holes, ensuring the spring is properly seated in the lugs before releasing pressure. Verify that the strap is perfectly centred in the lugs with no lateral play.

Yes, numerous aftermarket straps in 20mm size are available through Milano Straps, specialising in handcrafted watch straps. We offer selections in leather (alligator, calf, shell cordovan), technical fabrics (NATO Cordura), and FKM rubber. All straps are tested for compatibility with standard and PEB lugs, with online personalisation options.

A premium quality leather strap (alligator, shell cordovan or vegetable-tanned calf) typically lasts 3–5 years under regular use conditions, accounting for daily wear and moisture exposure. Lifespan increases significantly if the strap is periodically rotated with alternatives (NATO, rubber). FKM rubber straps maintain structural integrity for 5–7 years. Factors such as exposure to perspiration, salt water and UV rays accelerate ageing.