Seiko Cal. 6397 - 729

The Seiko 6397-729 represents an important milestone in Seiko's 1971 lineup. Powered by the 6397 caliber with 26j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-62e5db6dbc7e]

Also known as: World Timer, Sea Horse

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

36mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Silver

Jewels

26j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1971

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