Omega part Electronic Module cal.1340 ref. 9600 NOS,(not tested, its proper functioning is not guaranteed, due to time it has moisture stains on the cell of the battery, it is likely that it just needs cleaning.) 
•Omega 1340
•quartz controlled stepper motor
•sweep second
•11.5”’, Dm= 25.60mm
•H= 3.50mm
•7/13 jewels
•f = 32768 Hz
family:
•1340: –
•1342: date
•1343: date, chronometer
•1345: day, date
•1346: day, date, chronometer