Seiko Cal. 5691 - 573

This Spring Drive model from 1977 features a 41mm Titanium case. It features a White dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-4dde9ee7ce84]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

White

Jewels

17j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1977

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