Seiko Cal. 7191 - 631

The Seiko 7191-631 represents an important milestone in Seiko's 1974 lineup. Powered by the 7191 caliber with 34j jewels beating at 36,000 bph, it delivers a 50 hours power reserve. [seikata-wm-c44458fbdda3]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

39mm

Case Thickness

12.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

34j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1974

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