Seiko Cal. 6691 - 597

This Automatic model from 1980 features a 40mm PVD Black case. It features a Silver dial protected by a Acrylic crystal and offers 130m of water resistance. [seikata-wm-813c360531b0]

Also known as: Crown

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

32j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1980

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