Seiko Cal. 0720 - 656

The Seiko 0720-656 represents an important milestone in Seiko's 1977 lineup. Powered by the 0720 caliber with 36j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-a1dc95942188]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1977

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