ETA SA VALJOUX-7755

The VALJOUX-7755 is an automatic chronograph movement manufactured by ETA SA in Switzerland. Operating at 28,800 vph with Incabloc shock protection, it measures 7.25mm thick and features a ball-bearing rotor. The bicompax layout places the small seconds at 9:00 and a 30-minute totalizer at 12:00—unlike the tricompax 7750, it omits the 12-hour counter and provides date only. Parts interchange with the 7750 except for calendar and chronograph complications.