Strap for Fifty Fathoms Automatique Titanium / Black / NATO

The lug width of the Blancpain Fifty Fathoms 5015-12B30-NABA is 23 millimetres. This dimension is specific to this model and was chosen by Blancpain to maintain balanced optical proportions on the 45mm case. It is crucial to verify this measurement before ordering an aftermarket strap, as an incorrect size would result in incompatibility with the case's attachment mechanisms.

For the 5015-12B30-NABA we recommend three options depending on use: 1) Cognac or blue alligator for a classic-elegant look that develops patina over time; 2) Vegetable-tanned calf leather with pronounced grain for those seeking durability and moisture resistance; 3) Black FKM rubber for the professional alternating diving and daily activities. Casati Milano personalises every strap according to your wrist and aesthetic preferences during an appointment consultation.

The Blancpain 5015-12B30-NABA is fitted with bayonet spring bars that hold the strap fixed to both sides of the case. To remove the strap, use a dedicated tool (pin extractor or small flathead screwdriver) to gently push the spring bar inward, then withdraw the strap. The operation requires precision but can be completed in minutes. You can find tutorial videos on the Milano Straps website, or request assistance from the team via WhatsApp.

Any 23mm strap is compatible with the 5015-12B30-NABA, provided the bayonet spring bars fit correctly into the lateral seats of the case. Milano Straps offers a comprehensive collection of 23mm straps in various materials (alligator, calf, rubber, fabric) and colourways, all compatible and tested. Browse the 23mm strap collection on our website or contact us for a personalised consultation.

The lifespan of a leather strap depends on the material and usage. A quality alligator strap, worn regularly without prolonged moisture exposure, lasts 3-5 years. Vegetable-tanned calf leather, thanks to superior density, can last 5-7 years. The important thing is to dry the strap after contact with fresh and salt water, avoid prolonged direct sun exposure, and periodically apply a specific conditioner. Casati Milano offers an 18-month warranty against manufacturing defects and can perform repairs or replacements with swift turnaround times.