Seiko Cal. 4491 - 173

Seiko 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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seikata-wm-04e1725812f3