Seiko Cal. 5690 - 727

The Seiko 5690-727 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-eea975fcf438]

Also known as: Tuna, Rally

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

28j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1971

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