Seiko Cal. 6691 - 988

Released in 1990, the Cal. 6691 with design code 988 was part of Seiko's domestic market collection. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-fb03be758a6e]

Also known as: Baby Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1990

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