ETA caliber A31.501

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Brand:	ETA
Reference:	A31.501
Movement:	Automatic
Display:	Analog
Diameter:	25.60
Jewels:	21
Reserve:	64
Frequency:	25200
Hands:	Hours, Minutes, Small Seconds
Astronomical:	Moonphase

A31.501 description

Self-winding movement with power reserve of 64 hours.
Silicon balance spring.

Other calibers that are based on the ETA A31.501:

Longines caliber L893.5