Seiko Cal. 4551 - 740

The Seiko 4551-740 represents an important milestone in Seiko's 1972 lineup. Powered by the 4551 caliber with 33j jewels beating at 21,600 bph, it delivers a 62 hours power reserve. [seikata-wm-ac2b0519a9f0]

Also known as: Baby Tuna

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

45mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

150m

Dial Color

Navy

Jewels

33j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1972

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