Seiko Cal. 4561 - 366

This Spring Drive model from 1979 features a 45mm Gold-Plated case. It features a Navy dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-c7055fd3fb3c]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

15.0mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

19j

Frequency

21,600 bph

Power Reserve

55 hours

Year

1979

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