Seiko Cal. 6321 - 956

The Seiko 6321-956 represents an important milestone in Seiko's 1973 lineup. It features a Silver dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-0023b6a0e760]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

11.9mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

17j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1973

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