Seiko Cal. 6657 - 558

The Seiko 6657-558 represents an important milestone in Seiko's 1968 lineup. With its 20mm lug width and 15.6mm profile, it sits comfortably on most wrists. [seikata-wm-aeb49bb2a8bf]

Also known as: Shogun

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

15.6mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Black

Jewels

36j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1968

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