Seiko Cal. 6320 - 637

The Seiko 6320-637 represents an important milestone in Seiko's 1966 lineup. With its 18mm lug width and 13.4mm profile, it sits comfortably on most wrists. [seikata-wm-8417fea4f6fd]

Also known as: UFO, Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1966

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