Seiko Cal. 5678 - 320

The Seiko 5678-320 represents an important milestone in Seiko's 1965 lineup. Powered by the 5678 caliber with 20j jewels beating at 28,800 bph, it delivers a 66 hours power reserve. [seikata-wm-adf23a56eb6c]

Also known as: Crown, Emperor

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Burgundy

Jewels

20j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1965

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