Seiko Cal. 7171 - 641

The Seiko 7171-641 represents an important milestone in Seiko's 1973 lineup. Powered by the 7171 caliber with 18j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-d217ced8ed1e]

Also known as: Bullhead, Flighty

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

43mm

Case Thickness

14.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

18j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1973

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