21. Today, Longines sells sport watches and chronographs . 22. They have also pioneered in perpetual calendar, chronograph and minute repeater in watches. 23. The P'6510 was the world's first black chronograph released 1972. 24. Many chronographs are equipped with the flyback function, especially watches meant for pilots. 25. Later, the chronographs gained their current form. 26. It is often confused with the flyback chronograph . 27. Today double chronographs ( or rattrapante chronographs ) can be divided into two subgroups. 28. Today double chronographs ( or rattrapante chronographs ) can be divided into two subgroups. 29. The program focuses on micromechanics and watch service with a strong emphasis on chronographs . 30. Edifice watches range from basic chronograph to more advanced models with more computerized movements.
