Seiko Cal. 6628 - 845

This Spring Drive model from 1988 features a 37mm Stainless Steel case. Powered by the 6628 caliber with 20j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-be0988a67c64]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

10.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1988

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