Longines L791

The L791 is an automatic flyback chronograph movement manufactured by Longines. Introduced in 2020, it is based on the ETA A08.L11—a Longines-branded derivative of the established ETA 7750 architecture. The caliber features a column wheel chronograph mechanism and COSC certification, with a silicon balance spring providing improved magnetic resistance. It remains in production and powers Longines' primary chronograph collections.