Breitling Endurance Pro X82310D51B1S1

The case measures 44mm across and 12.5mm thick. Case material: Breitlight. Case size alone is a poor guide to how a watch wears; lug-to-lug length and how the bracelet drops off the case matter more, which is why we suggest trying one on before you commit.

Thermocompensated SuperQuartz, Breitling Caliber 82 (COSC).

It is rated to 100 meters, about 328 feet. That is enough for swimming and snorkeling, but not for scuba diving. One caution that applies to every watch on this page: a water resistance figure describes a new watch with fresh gaskets. On a piece that is years past its last service, treat the rating as unknown until it has been pressure tested.

Position 1 letter = case-and-bezel material, X = Breitlight; positions 2-3 = caliber, and a number of 50 or above denotes a quartz movement, here Caliber 82 (SuperQuartz); position 4 = 3 = COSC chronometer certification. The trailing characters encode the dial and the strap, which for this full-length reference resolve to a black dial on a blue rubber strap. Breitling does not publish this scheme. It is compiled from collector documentation and reads as a reliable guide rather than a manufacturer specification.. Reading the reference is the fastest way to confirm that a watch is what the seller says it is, before you get anywhere near the movement.

Yes. We buy this reference outright, and we lend against it if you would rather keep it. We are a family-owned San Diego buyer established in 2006, our appraisers are GIA-trained, and the appraisal is complimentary with no obligation to sell. You can bring it to our Gaslamp showroom at 907 Sixth Ave or start online. If you are looking to buy this reference instead, tell us and we will let you know when one comes in.