Seiko Cal. 6622 - 731

The Seiko 6622-731 represents an important milestone in Seiko's 1970 lineup. Powered by the 6622 caliber with 25j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-e690ca47268c]

Also known as: Monster, Sportsmatic

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

43mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

140m

Dial Color

Navy

Jewels

25j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1970

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