Seiko Cal. 7191 - 931

The Seiko 7191-931 represents an important milestone in Seiko's 1979 lineup. Powered by the 7191 caliber with 23j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-af151ca3c788]

Also known as: Bullhead

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

12.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

Champagne

Jewels

23j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1979

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