Original ETA watch movement 251.262.
The ETA caliber 251.262 is a 27 jewels quartz chronograph movement. It is part of the Flatline line of ETA movements. This caliber was introduced in 1988 and is no longer in production.
It was widely used by most of the watch manufacturers for their top quartz powered watches (Breitling, Tag Heuer Aquaracer Chrono, Certina DS First, Eterna KonTiki Chrono, Swiss Army, …)
Diameter: 13 1/4”’ (30mm)
Thickness: 5 mm
Battery Cell Number: 394
Frequency: 32768 Hz
Stem: 401-1339/Tap 10
Hand Sizes: 150/80/30
Functions: hours, minutes, small seconds sub-dial at 6:00, 1/10 seconds at 2:00, 60 seconds central chronograph hand, 60 minutes central chronograph hand, 12 hours sub-dial at 10:00, split seconds chronograph function, date at 4:00
Country of manufacture: Switzerland