Strap for Superocean Heritage II 46 Chronograph Stainless Steel / Blue / Blue / Calf / Pin

The lug width is 24mm. To verify compatibility, measure the internal space between the lugs on the watch case: it should correspond to 24 millimetres between the attachment points of the spring bars. This width is standard among sports chronographs with substantial wrist presence and is readily compatible with quality artisanal straps.

The choice depends on intended use. For vintage-sport elegance, Nile alligator with natural tanning enhances the model's character and develops patina over time. For extended durability, shell cordovan maintains flexibility beyond three years of daily wear. For humid and marine environments, vulcanised rubber remains unbeatable. Casati Milano recommends choosing based on use context and personal colour preference.

Locate the spring bar latches on each side of the case (visible when viewing the strap from the rear). Use a spring bar tool to lift the latch and extract the bar: apply gentle outward pressure on the bar to release it from the lug. Insert the new strap by engaging the bar into the lug holes. Verify that the bar is fully locked and that the strap does not slip. If uncertain, contact Casati Milano for professional installation.

Yes, any strap with 24mm lug width is compatible with the Superocean Heritage A1331216/C963/441X/A20BA.1, regardless of brand. Ensure the strap is fitted with standard compatible bars (spring bar or bayonet according to model) and that the total length suits your wrist. Milano Straps offers a selection of 24mm straps ready for dispatch and customisable.

Duration depends on material and use. Vegetable-tanned calf, if properly maintained, resists 18–24 months with moderate daily use. Natural alligator lasts 24–36 months due to denser fibre structure. Shell cordovan, with superior elastic properties, exceeds 3 years of daily wear. Natural vulcanised rubber lasts 4–5 years. Casati Milano offers an 18-month guarantee on all bespoke straps and recommends annual stitching inspections.