Seiko Cal. 6691 - 660

The Seiko 6691-660 represents an important milestone in Seiko's 1986 lineup. The Fixed bezel and 43mm case give it a distinctive presence on the wrist. [seikata-wm-44ba4de51057]

Also known as: Turtle, Sumo

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Silver

Jewels

19j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1986

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