Seiko Cal. 6698 - 431

The Seiko 6698-431 represents an important milestone in Seiko's 1976 lineup. Powered by the 6698 caliber with 34j jewels beating at 21,600 bph, it delivers a 40 hours power reserve. [seikata-wm-c28deb4619cc]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

41mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

34j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1976

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