Tudor has just shared with us information sure to be of interest to not only Tudor Replica fans, but also, intriguingly enough, Breitling fans as well: the new column-wheel chronograph caliber MT5813, featured in the new Black Bay Chronograph, is the result of a collaboration with Breitling, and is based on the Breitling Replica B01 chronograph movement.

The collaboration began several years ago, out of a desire on Tudor’s part to create a modern, robust, and reliable chronograph caliber that it could offer to its consumers at a very approachable price. Modifications to the B01 include a Tudor oscillating weight and Tudor’s own finishes, as well as regulating organs made by Tudor – this includes a silicon balance spring. As well, the layout in Tudor’s Black Bay Chronograph is two-register, with Tudor’s historically-significant 45-minute counter.

The Tudor Replica Black Bay Chronograph.

Tudor has told us that Breitling will also adopt a Tudor movement cal. MT5613, but with a Breitling oscillating weight and Breitling’s own regulating system, balance spring, and finishes; this will be Breitling caliber B20.

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The Tudor Black Bay Chronograph will be available this summer on either a strap or a rivet-style bracelet, priced at $4,725 and $5,050, respectively. Both will come with an indigo denim fabric strap as well. The case is 41mm in diameter and 200 meters water resistant.

We’ll be bringing you more in-depth information on this fascinating collaboration as more info becomes available.