Seiko Cal. 5677 - 739

This Automatic model from 1970 features a 40mm Two-Tone case. It features a Black dial protected by a Hardlex crystal and offers 110m of water resistance. [seikata-wm-b025a0114f7a]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Black

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1970

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