Seiko Cal. 7173 - 278

The Seiko 7173-278 represents an important milestone in Seiko's 1980 lineup. Powered by the 7173 caliber with 21j jewels beating at 28,800 bph, it delivers a 69 hours power reserve. [seikata-wm-2238dccdb61a]

Also known as: Tuna, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

21j

Frequency

28,800 bph

Power Reserve

69 hours

Year

1980

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