MST 916 

Remarks: Electonically switched, electrical impulse driven flywheel, with hack. Base movement is an ETA-ESA 9154 Dynotron.
Production period: 1970-74

Jewels: 13
Beat: 28800
Winding: Battery
Manufacturer: Other/Ebauche
Hand sizes:

MST 916 12.5''' (28mm) electronic, balance wheel

Common parts/Interchange
Watches in my collection with the MST916:

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