Seiko Cal. 4557 - 973

The Seiko 4557-973 represents an important milestone in Seiko's 1968 lineup. Powered by the 4557 caliber with 20j jewels beating at 21,600 bph, it delivers a 69 hours power reserve. [seikata-wm-e11d22c68288]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

69 hours

Year

1968

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