Seiko Cal. 6691 - 131

The Seiko 6691-131 represents an important milestone in Seiko's 1972 lineup. Powered by the 6691 caliber with 23j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-c9de68b7fa0f]

Also known as: Shogun, Golden Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

38mm

Case Thickness

10.3mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1972

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