Seiko Cal. 4491 - 173

The 4491-173 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4491 caliber with 30j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-04e1725812f3]

Also known as: Sumo, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

15.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1989

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