Seiko Cal. 5681 - 433

The Seiko 5681-433 represents an important milestone in Seiko's 1968 lineup. Powered by the 5681 caliber with 27j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-05592f12f989]

Also known as: Silverwave, Sea Horse

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

Black

Jewels

27j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1968

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