Seiko Cal. 0771 - 904

This Spring Drive model from 1976 features a 39mm Titanium case. It features a Black dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-42ec83760985]

Also known as: Tuna, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

39mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1976

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