Seiko Cal. 4525 - 403

This Spring Drive model from 1967 features a 46mm PVD Black case. It features a Silver dial protected by a Mineral crystal and offers 100m of water resistance. [seikata-wm-670d011e9241]

Also known as: Bullhead, Sea Horse

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.7mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Silver

Jewels

36j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1967

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