Seiko Cal. 5646 - 417

This Spring Drive model from 1972 features a 45mm PVD Black case. It features a Navy dial protected by a Mineral crystal and offers 40m of water resistance. [seikata-wm-f51769422707]

Also known as: Sportsmatic, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

40m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

47 hours

Year

1972

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