Seiko Cal. 6691 - 231

The Seiko 6691-231 represents an important milestone in Seiko's 1993 lineup. It features a Green dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-7de95dfc121f]

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Green

Jewels

34j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1993

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