Seiko Cal. 4491 - 121

The Seiko 4491-121 represents an important milestone in Seiko's 1983 lineup. The Rotating bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-a84e437f80e0]

Also known as: Sumo, Bellmatic

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

150m

Dial Color

White

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1983

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