Strap for Aquis Date 43.5 Stainless Steel / Blue / Bracelet

The lug width of this Aquis model is 23 millimetres. This is a non-standard dimension, characteristic of technical diver watches. To verify strap compatibility, measure the internal distance between the two lugs using a digital calliper, excluding the lugs themselves from the measurement. This precision is essential to ensure correct mounting without structural play.

The choice depends on intended use. For formal elegance, black or dark brown alligator enhances the technical nature whilst elevating formality. For daily versatility, vegetable-tanned calf leather in tobacco-brown offers natural patina and noble ageing. For regular diving or tropical climates, nylon NATO in pearl grey or vulcanised rubber guarantees water-resistance and thermoregulation. Shell Cordovan represents the optimal compromise between aesthetics and performance.

The Aquis uses a spring bar system. Obtain a watchmaker's spring bar tool or dedicated lever. Place the watch on a soft surface (fabric) to prevent scratches. Using the tool, gently compress the internal spring until the first end is freed, slide it inward and withdraw. Repeat from the opposite side. To insert the new strap, align the holes with the lugs and insert the spring bar, verifying both ends are firmly seated. Never force; fitting must be smooth.

Yes, Milano Straps offers a specialised collection of artisanal 23mm straps compatible with the Oris Aquis. Options include alligator, calf leather, NATO and vulcanised rubber. Each strap is crafted bespoke at Atelier Casati Milano and customisable online. Ensure the chosen strap is explicitly declared as 23mm compatible to guarantee perfect interface with the model's lugs.

A quality artisanal leather strap (alligator or vegetable-tanned calf) typically lasts 3–5 years of daily use, with variation based on climate, sun exposure and humidity transport. Leather ages gracefully, acquiring patina. With proper care—regular cleaning with a damp cloth, protection from harsh liquids and periodic rest—longevity increases significantly. Nylon NATO straps resist 4–7 years; vulcanised rubber 5–8 years. Rotating between multiple straps extends each one's life.