Seiko Cal. 6321 - 156

The Seiko 6321-156 represents an important milestone in Seiko's 1968 lineup. The Bidirectional bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-eab8ad789d03]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Black

Jewels

30j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1968

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