Seiko Cal. 4491 - 613

This Spring Drive model from 1991 features a 36mm Titanium case. Powered by the 4491 caliber with 27j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-287b7ae6477f]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

27j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1991

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