Seiko Cal. 5664 - 371

The Seiko 5664-371 represents an important milestone in Seiko's 1967 lineup. Powered by the 5664 caliber with 30j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-ddfd46b8a27a]

Also known as: Sea Horse, Emperor

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

30j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1967

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