Seiko Cal. 6628 - 355

The Seiko 6628-355 represents an important milestone in Seiko's 1985 lineup. Powered by the 6628 caliber with 33j jewels beating at 21,600 bph, it delivers a 37 hours power reserve. [seikata-wm-279aaa3c930e]

Also known as: Monster

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

43mm

Case Thickness

13.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Cream

Jewels

33j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1985

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