Seiko Cal. 6628 - 420

The Seiko 6628-420 represents an important milestone in Seiko's 1973 lineup. It features a Green dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-d669f9bb512e]

Also known as: Turtle

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1973

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