Seiko Cal. 6321 - 100

The Seiko 6321-100 represents an important milestone in Seiko's 1973 lineup. It features a Navy dial protected by a Hardlex crystal and offers 180m of water resistance. [seikata-wm-c94bc178a2fa]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

45mm

Case Thickness

9.7mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

180m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1973

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