Longines Caliber L791.4

Brand	Longines
Caliber Number	L791.4
In-House?	No
Base Caliber	ETA A08.L11
Movement Type	Automatic, self-winding mechanical, flyback chronograph
Chronometer Spec?	Yes (COSC)
Lignes	13.25”’
Diameter	30mm
Height	Unconfirmed
Jewel Count	28
Beat Rate / Frequency	28,800 vph / 4 Hz
Lift Angle	Unconfirmed
Power Reserve	68 hours
Rotor Style	Ball-bearing
Hand-Windable?	Yes
Anti-Shock Device	Nivachoc
Balance Spring Material	Monocrystalline silicon
Hand Count	5
Chronograph System	Column wheel
Chronograph Style	Bi-compax
Subdial Layout	3-9
Functions	Central hours; central minutes; central chronograph seconds; small seconds subdial at 9:00; 30 minutes chronograph counter at 3:00
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made
Known Models	Longines Spirit Flyback (Add your watch to the comments below…)

The Longines caliber L791.4 is an automatic column wheel chronograph with flyback functionality.

The calibre L791.4 is found in Longines Spirit Flyback models introduced in March 2023.

This movement is based on the ETA caliber A08.L11.

Rotor Styles:

There are three rotor variations depending on the watch style.

The most common is the silver colored version featured at the top of this page (stainless steel and titanium models).

Two-tone models have yellow or rose gold rotors as seen below:

Additional Resources:

• Official instruction manual (pdf)