Seiko Cal. 5681 - 397

The Seiko 5681-397 represents an important milestone in Seiko's 1976 lineup. Powered by the 5681 caliber with 25j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-bd61d1d44d36]

Also known as: Flighty

Specifications

Movement

Solar

Case Material

Titanium

Case Width

42mm

Case Thickness

12.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Black

Jewels

25j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1976

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