Seiko Cal. 6689 - 536

The Seiko 6689-536 represents an important milestone in Seiko's 1979 lineup. Powered by the 6689 caliber with 26j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-076e3521c627]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

30m

Dial Color

White

Jewels

26j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1979

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