Seiko Cal. 4451 - 740

The Seiko 4451-740 represents an important milestone in Seiko's 1972 lineup. Powered by the 4451 caliber with 27j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-b0cec42394fd]

Also known as: Crown, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1972

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