Seiko Cal. 7031 - 507

Seiko 7031-507

The Seiko 7031-507 represents an important milestone in Seiko's 1967 lineup. Powered by the 7031 caliber with 29j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-893d107c2e6c]

Also known as: Bullhead, Sportsmatic

Specifications

Movement
Kinetic
Case Material
Two-Tone
Case Width
35mm
Case Thickness
9.2mm
Lug Width
20mm
Crystal
Acrylic
Bezel
Fixed
Water Resistance
190m
Dial Color
Black
Jewels
29j
Frequency
36,000 bph
Power Reserve
57 hours
Year
1967

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