Seiko Cal. 6628 - 346

The Seiko 6628-346 represents an important milestone in Seiko's 1978 lineup. With its 18mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-1b4372e9e4fa]

Also known as: Tuna, Navigator

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

43mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

White

Jewels

36j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1978

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