Strap for Reverso Classic Large Duoface Small Seconds Stainless Steel / Silver / Alligator

The lug width of the Reverso 3848420 is 20 mm. This measurement represents the distance between the two internal lugs of the case and determines which strap is compatible. To verify the measurement, use a digital calliper positioned on the inner shoulders of the case. Precise measurement is essential to ensure the strap fits neither too tightly nor too loosely in the lugs.

For the Reverso 3848420, we primarily recommend a Porosus alligator with pronounced grain, which emphasises the geometric minimalism of the case. If you prefer a warmer, more stratified approach, a vegetable-tanned calf leather in cognac or dark brown tones offers a natural patina that improves over time. Shell cordovan represents the choice for those seeking deep luminescence. Vulcanised rubber remains ideal for dynamic use or humid environments, maintaining aesthetic coherence and practicality.

The strap is replaced by acting on the case lugs. Use a dedicated extraction tool: position the tip in the small lateral notch of the lug and apply gentle pressure to release the spring. Never force: the system is designed to disengage smoothly. Once the old strap is removed, thread the new one through the lugs, ensuring the shoulder of the new strap couples perfectly with the internal shoulder of the case. Verify that the strap is centred and does not protrude from the lugs.

Yes, any strap with a 20 mm lug width is compatible with the Reverso 3848420. Compatibility is guaranteed by lug width: if the strap measures exactly 20 mm at the shoulder, it will fit perfectly in the case lugs. Artisanal straps from specialised manufacturers or bespoke makers like Casati Milano offer superior construction quality and materials compared to OEM options, allowing you to personalise the watch's aesthetic whilst maintaining perfect structural functionality.

The lifespan of a leather strap depends on the type of tanning, frequency of use and environmental conditions. Vegetable-tanned calf, with proper care (protection from excessive moisture, periodic conditioning with natural oils), typically lasts 5-7 years before requiring replacement. Porosus alligator, being more robust, can last 7-10 years. Vulcanised rubber offers superior durability, up to 12-15 years. Casati Milano provides an 18-month warranty against manufacturing defects, but real longevity depends on conscious care and proper storage of the strap when not worn.