Seiko Cal. 5657 - 737

The Seiko 5657-737 represents an important milestone in Seiko's 1966 lineup. Powered by the 5657 caliber with 17j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-fdeee01570df]

Also known as: Shogun, World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

17j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1966

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