Seiko Cal. 6698 - 636

The Seiko 6698-636 represents an important milestone in Seiko's 1971 lineup. Powered by the 6698 caliber with 27j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-aac9e79e3a57]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1971

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