ETA Caliber 256.041 Watch Movement

Manufacturer	ETA
Caliber Number	256.041
Lignes	8 1/4”’
Diameter	18.2mm
Height	1.95mm thick
Battery Cell Number	315
Jewels	6
Frequency	32,768 Hz
Stem	401-1099
Hand Sizes	120/70 (tap 10)
Functions	Central hours, central minutes, date
Country of Manufacture	Switzerland
Known Models	Rado Diastar (Add your watch to the comments below…)

ETA caliber 256.041 is a 2 hand Swiss made quartz movement with 6 jewels. Official documentation for this movement was found with dates from 2009. This caliber 256.041 is currently discontinued by ETA. The replacement is caliber E61.041. You may also be able to use ETA caliber 256.031, but this should be confirmed first. If you just need the electric module, the part number is 4000.

5 or 6 Jewels, Date or No Date:

Official ETA tech sheets list this caliber as having 6 jewels with a calendar (date) complication, however, we have come across movements signed with the same caliber number, but having 5 jewels (for example: the picture posted by Fabio in the comments below). This could be an older version of the movement, but it could also have something to do with date/no date. The 5 jewel versions found were hours and minutes only and without a date. Please comment below if you have a 5 or 6 jewels movements and whether your watch has a date or not.