Seiko Cal. 5641 - 321

The Seiko 5641-321 represents an important milestone in Seiko's 1972 lineup. Powered by the 5641 caliber with 28j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-191e9a1e2f44]

Also known as: UFO, Sea Horse

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

28j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1972

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