Seiko Cal. 5681 - 397

The Seiko 5681-397 represents an important milestone in Seiko's 1987 lineup. Powered by the 5681 caliber with 27j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-79c192d4ad27]

Also known as: Silverwave

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

41mm

Case Thickness

12.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

27j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1987

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