Seiko Cal. 4487 - 771

The Seiko 4487-771 represents an important milestone in Seiko's 1967 lineup. It features a White dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-04497c847b75]

Also known as: Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

44mm

Case Thickness

13.7mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

20j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1967

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