Seiko Cal. 6691 - 431

The Seiko 6691-431 represents an important milestone in Seiko's 1973 lineup. Powered by the 6691 caliber with 34j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-920f9bb50d33]

Also known as: Panda, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

35mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

34j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1973

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