Seiko Cal. 6658 - 440

The Seiko 6658-440 represents an important milestone in Seiko's 1977 lineup. Powered by the 6658 caliber with 18j jewels beating at 28,800 bph, it delivers a 72 hours power reserve. [seikata-wm-621cca3db974]

Also known as: Shogun, Flighty

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

13.8mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1977

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