Seiko Cal. 6228 - 722

The Seiko 6228-722 represents an important milestone in Seiko's 1976 lineup. Powered by the 6228 caliber with 31j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-ce1b79336c3b]

Also known as: Sumo, Bullhead

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1976

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