Seiko Cal. 6691 - 501

This Spring Drive model from 1998 features a 40mm Two-Tone case. With its 18mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-8eae12300912]

Also known as: Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.5mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1998

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