Seiko Cal. 4491 - 546

This Spring Drive model from 1991 features a 37mm Stainless Steel case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 170m of water resistance. [seikata-wm-94b9f646cbcf]

Also known as: Shogun, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1991

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