Breitling B31

The Breitling caliber B31 is an automatic movement with a date function, developed in collaboration with Sellita AMT. Operating at 4 Hz, it has a 78-hour power reserve and 26 jewels with Incabloc shock protection. This 3-hand caliber is the first three-hand manufacture movement designed and developed by Breitling. It is currently in production, found in the Top Time B31 introduced in 2025.