Seiko Cal. 6628 - 891

The Seiko 6628-891 represents an important milestone in Seiko's 1966 lineup. Powered by the 6628 caliber with 31j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-f22f7a558520]

Also known as: Sumo, Sea Horse

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

31j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1966

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