La Joux-Perret L101

The L101 is an automatic chronograph movement manufactured by La Joux-Perret. It measures 30.40mm in diameter and 7.9mm thick, operates at 4 Hz (28800 vph), and provides a 60-hour power reserve. The dial displays include center seconds, a 30-minute counter at 12 o'clock, 12-hour counter at 6 o'clock, small seconds at 9 o'clock, and date at 3 o'clock. The movement has 26 jewels in automatic mode (24 in manual winding) and is dimensionally compatible with the ETA7750SW500A.