Seiko Cal. 6628 - 987

The Seiko 6628-987 represents an important milestone in Seiko's 1967 lineup. It features a Champagne dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-45fe864da3f0]

Also known as: Sumo, Navigator

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Champagne

Jewels

34j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1967

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