Technical Archive

Breitling
Navitimer UB01391A1B1P1— lug 14mm

Breitling Navitimer UB01391A1B1P1: 14mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Navitimer B01 Chronograph 41 Stainless Steel - Red Gold / Japan

Artisanal Note

"This model requires a precise 14mm lug width to preserve the original sartorial balance."

Lug Width

14 mm

The essential strap measurement.

Browse 14mm straps →

Reference

UB01391A1B1P1

Movement

Breitling caliber Caliber B01 Hours, Minutes, Small Seconds | Date | Chronograph, Column wheel | Chronometer

The Heritage

The Breitling Navitimer UB01391A1B1P1 is a 41 mm two-tone chronograph combining stainless steel with red gold, featuring the in-house B01 manual-winding movement certified by COSC. Equipped with a column-wheel mechanism and vertical coupling, this iconic aviation watch delivers -4/+6 seconds per day precision. The three-counter dial and date function provide technical clarity. Lug width is 14 mm.

FAQ

What is the lug width of the Breitling Navitimer UB01391A1B1P1?

The Breitling Navitimer UB01391A1B1P1 features a lug width of 14 mm. This measurement should be taken with a digital calliper, measuring the internal distance between the two lugs at the strap attachment point. It is essential not to confuse this with the outer lug width, which would yield a larger figure. All straps compatible with this reference must have a 14 mm attachment end.

What is the best strap for the Breitling Navitimer UB01391A1B1P1?

For the Navitimer UB01391A1B1P1 in red gold and stainless steel, an alligator strap with a polished finish is the most coherent choice, complementing the precious metal elements of the case. Alternatively, vegetable-tanned calf leather develops a distinguished natural patina over time, while shell cordovan offers a dense texture and natural lustre without artificial varnish. For sporting use, a shaped rubber strap in 14 mm is the most functional option.

How do you change the strap on the Breitling Navitimer UB01391A1B1P1?

Replacing the strap on the Navitimer UB01391A1B1P1 requires a flat-blade screwdriver or a dedicated spring bar tool to release the spring bars housed within the lugs. It is advisable to rest the watch on a soft pad to prevent scratches to the case. The operation is fully reversible and does not require a watchmaker, but should be carried out carefully to avoid deforming the lugs or damaging the caseback.

Are there aftermarket straps compatible with the Breitling Navitimer UB01391A1B1P1?

Yes. Any strap with a 14 mm attachment end is technically compatible with the Navitimer UB01391A1B1P1. Milanostraps.it offers a curated selection of handcrafted leather, rubber and NATO nylon straps specifically listed for the 14 mm lug width, with standard lengths (75/115 mm or 70/115 mm) suited to the 41 mm case diameter of this reference.

How long does a leather strap last on the Breitling Navitimer UB01391A1B1P1?

The lifespan of a leather strap depends on the type of hide, maintenance and usage conditions. A quality alligator strap, kept away from water and excessive perspiration, can last between 3 and 5 years with regular wear. Vegetable-tanned calf leather has a similar lifespan but develops an appealing patina over time. Casati Milano provides an 18-month guarantee against manufacturing defects on all handcrafted straps.