Seiko Cal. 4451 - 978

The Seiko 4451-978 represents an important milestone in Seiko's 1974 lineup. Powered by the 4451 caliber with 31j jewels beating at 28,800 bph, it delivers a 61 hours power reserve. [seikata-wm-2bdda34a66c9]

Also known as: UFO, Sportsmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

13.4mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Cream

Jewels

31j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1974

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