Seiko Cal. 6658 - 787

The Seiko 6658-787 represents an important milestone in Seiko's 1966 lineup. The Fixed bezel and 41mm case give it a distinctive presence on the wrist. [seikata-wm-8cdbe4fa5284]

Also known as: Sumo

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1966

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