Seiko Cal. 5657 - 354

The Seiko 5657-354 represents an important milestone in Seiko's 1965 lineup. With its 18mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-11b2b718545b]

Also known as: Sumo, Shogun

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

35mm

Case Thickness

8.5mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1965

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