Seiko Cal. 4487 - 702

The Seiko 4487-702 represents an important milestone in Seiko's 1976 lineup. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-6ceed441b98d]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

170m

Dial Color

White

Jewels

21j

Frequency

21,600 bph

Power Reserve

39 hours

Year

1976

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