Seiko Cal. 6628 - 820

This Spring Drive model from 1977 features a 41mm PVD Black case. Powered by the 6628 caliber with 35j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-7b1a7e0835cc]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

35j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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