Technical Archive

Breitling
Premier A37340351G1X1— lug 20mm

Breitling Premier A37340351G1X1: 20mm strap. Alligator, box calf, shell cordovan and rubber, cut and stitched in Milano. Choose your leather.

Premier Automatic 40 Stainless Steel / Silver / Nubuck Anthracite / Folding

Artisanal Note

"This model requires a precise 20mm lug width to preserve the original sartorial balance."

Technical Specifications

Breitling A37340351G1X1
Lug Width
20 mm

The essential strap measurement.

Browse 20mm straps →
Reference

A37340351G1X1

Movement

Breitling caliber Caliber 37 Hours, Minutes, Small Seconds | Date

The Heritage

The Breitling Premier Automatic A37340351G1X1 is a 40mm stainless steel round-cased dress watch with a silver dial and anthracite nubuck strap. It features the manual-wind Breitling Caliber 37 movement with hours, minutes, small seconds at 6 o'clock, and date display. The 20mm lug width accommodates standard aftermarket straps and ensures proper fit without compromise to the spring bar retention.

FAQ

What is the lug width of the Breitling Premier A37340351G1X1?

The lug width of the Breitling Premier A37340351G1X1 is 20 mm. This measurement should be taken with a digital calliper positioned between the two parallel lugs, flush against the case, to obtain an accurate reading rather than relying on visual estimation.

What is the best strap for the Breitling Premier A37340351G1X1?

For the Breitling Premier A37340351G1X1, the most suitable materials are vegetable-tanned calf leather for everyday and business wear, alligator belly or hornback for formal and evening occasions, and shell cordovan for those seeking a leather that develops a deep patina over time. The standard configuration is a 20 mm straight end at the lug tapering to 18 mm at the buckle.

How do you change the strap on the Breitling Premier A37340351G1X1?

To replace the strap on the Breitling Premier A37340351G1X1, a double-tipped springbar tool is required. Insert the tool into the gap between the lug and the strap, compress the springbar and slide the strap out. Care should be taken to avoid scratching the steel lugs; it is advisable to protect the case with a soft cloth before proceeding.

Are there aftermarket straps compatible with the Breitling Premier A37340351G1X1?

Yes, the Breitling Premier A37340351G1X1 features a standard 20 mm lug width, making it compatible with a wide range of quality aftermarket straps. Milano Straps offers a curated selection of 20 mm leather, NATO and rubber straps, crafted by hand with a straight 20 mm end and a tapered 18 mm buckle end, designed to suit the lug geometry of the Premier.

How long does a leather strap last on the Breitling Premier A37340351G1X1?

The lifespan of a leather strap depends on the quality of the tanning process and daily usage. A quality vegetable-tanned calf strap has an average life of 12 to 24 months with daily wear; alligator or shell cordovan, owing to the density of their fibres, can exceed 3 to 4 years when properly maintained with natural conditioners and protected from excessive moisture. Casati Milano offers an 18-month warranty against manufacturing defects.