Seiko Cal. 7057 - 520

The Seiko 7057-520 represents an important milestone in Seiko's 1971 lineup. Powered by the 7057 caliber with 20j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-9d7378c62b42]

Also known as: Sumo

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1971

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