I have only one mechanical chronograph in my collection.
The Breitling Premier from 1998/1999 was inspired by the original Breitling Premier from the late 30’s. The original was the first waterproof chronograph wristwatch in the world and it used a hand wound Venus movement.
The 1998/1999 model is based on the 37 mm Navitimer case. The movement is an automatic Kelek cal. 10000, made especially for Breitling with chronograph counters for 10 minutes/3 hours.
Kelek was bought by Breitling in 1996 and changed name to Breitling Chronometrie in 2001.