Seiko Cal. 7191 - 631

Seiko 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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