Seiko Cal. 6691 - 612

This Automatic model from 1987 features a 40mm Two-Tone case. It features a White dial protected by a Mineral crystal and offers 160m of water resistance. [seikata-wm-7b6d5802720f]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

160m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1987

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