Strap for Pilot's Watch Spitfire Chronograph Stainless Steel / Black / Spanish / Bracelet

The lug width of the IW3706-20 is 20 millimetres. This width is model-specific and determines which compatible strap you should select. To verify it, measure the distance between the two spring bar attachment points using a digital calliper or ruler. Precise measurement is essential to avoid incompatibility issues when changing the strap.

Alligator represents the premium choice: the geometric texture of the dermal plates evolves over time, creating a personal patina, whilst the softness contrasts elegantly with the steel case. Alternatively, calf leather with vegetable tanning offers a natural grain that ages with dignity, absorbing daily creases as the strap's signature. For an operational option, ballistic canvas NATO maintains the model's avionic identity with military sobriety.

Remove the watch from your wrist. Locate the spring bar positioned beneath the lugs: place the removal tool horizontally, inserting the tip into the side groove of the spring bar. Press gently downward until the spring bar retracts, then slide the strap horizontally out of its seat. Repeat the procedure on the other side. To install the new strap, align the attachment holes with the lugs and reinsert the spring bars, ensuring they engage symmetrically on both sides.

Yes, provided the strap is specifically manufactured for a 20-millimetre lug width. High-quality artisanal straps, crafted from premium materials such as alligator or vegetable-tanned calf leather, guarantee perfect compatibility and superior durability compared to generic models. Always verify the correct lug width before purchase to prevent incompatibility.

A high-quality leather strap, made from alligator or vegetable-tanned calf, has an average lifespan of 3 to 5 years with moderate daily use. Longevity depends on usage frequency, climate conditions and maintenance: keeping the leather dry and protecting it from excessive moisture and temperature fluctuations will significantly extend the strap's life. Periodic maintenance with creams specifically formulated for quality leather preserves flexibility and slows aging.