Seiko Cal. 6321 - 978

The Seiko 6321-978 represents an important milestone in Seiko's 1977 lineup. With its 22mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-933fc1955786]

Also known as: Tuna, Helmet

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1977

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