Seiko Cal. 6628 - 397

The Seiko 6628-397 represents an important milestone in Seiko's 1990 lineup. Powered by the 6628 caliber with 31j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-4e66bf5e1cfc]

Also known as: Samurai

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

White

Jewels

31j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1990

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