Seiko Cal. 4581 - 303

The Seiko 4581-303 represents an important milestone in Seiko's 1970 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-65308e02f20a]

Also known as: Shogun, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

36mm

Case Thickness

13.0mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Navy

Jewels

18j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1970

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