Seiko Cal. 4487 - 623

The Seiko 4487-623 represents an important milestone in Seiko's 1969 lineup. It features a Silver dial protected by a Acrylic crystal and offers 50m of water resistance. [seikata-wm-56a7ae48de88]

Also known as: Navigator

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.1mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

28j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1969

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