Seiko Cal. 5657 - 935

The Seiko 5657-935 represents an important milestone in Seiko's 1974 lineup. The Fixed bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-6f3ce4604ca5]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

35j

Frequency

28,800 bph

Power Reserve

57 hours

Year

1974

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