Breitling
Super Chronomat U17356531L1S1— lug 20mm
Breitling Super Chronomat U17356531L1S1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.
Artisanal Note
"This model requires a precise 20mm lug width to preserve the original sartorial balance."
Technical Specifications
Breitling U17356531L1S1The essential strap measurement.
Browse 20mm straps →U17356531L1S1
Breitling caliber Caliber 77 Hours, Minutes, Seconds | Date | Chronometer
The Heritage
Compatible Straps
Selected for the 20mm lug width of the Super Chronomat
FAQ
What is the lug width of the Breitling Super Chronomat U17356531L1S1?
The Breitling Super Chronomat U17356531L1S1 features a lug width of 20mm. This measurement is taken with a digital calliper positioned internally between the two lugs, perpendicular to the case centre axis. The value is confirmed in the official Breitling technical specification sheet and is consistent across the entire Super Chronomat 38mm range.
What is the best strap for the Breitling Super Chronomat U17356531L1S1?
Given the hybrid case construction combining ceramic, red gold and stainless steel, the most effective choices are a glossy Hornback alligator strap in black — creating a sharp contrast against the gold accents — or a vegetable-tanned calf strap in tobacco or havana tones, which complements the warmth of the red gold and develops a natural patina over time. Shell cordovan in burgundy is a third option for understated character. All these materials are available as bespoke 20mm straps from Casati Milano.
How do you change the strap on a Breitling Super Chronomat U17356531L1S1?
The strap is removed using a dedicated spring bar tool or a fine flat-head screwdriver, acting on the spring bars housed within the lugs. It is advisable to rest the case on a soft pad to protect the ceramic bezel during the operation. Fitting the new strap involves inserting one spring bar end into the lug, compressing the second pin and hooking the other lug. The operation can be performed without a watchmaker provided the correct tools are used.
Are there aftermarket straps compatible with the Breitling Super Chronomat U17356531L1S1?
Yes. Any strap with a 20mm lug width and an 18mm buckle end is technically compatible with the Super Chronomat U17356531L1S1. Milanostraps.it offers a curated range of handcrafted 20mm straps made by Casati Milano, with options to customise length, taper thickness, stitching style and closure type (buckle or deployant clasp). All straps are produced in Italy using selected hides.
How long does a leather strap last on a Breitling Super Chronomat?
Longevity depends on leather type, care routine and frequency of wear. A vegetable-tanned calf strap, well maintained with occasional conditioning cream and rotated with other straps, typically lasts 2 to 4 years before showing structural wear. Alligator and shell cordovan, owing to their higher fibre density, offer superior longevity — often beyond 5 years. Casati Milano straps carry an 18-month warranty against manufacturing defects.