Seiko Cal. 7031 - 197

Seiko 7031-197

The Seiko 7031-197 represents an important milestone in Seiko's 1969 lineup. Powered by the 7031 caliber with 35j jewels beating at 21,600 bph, it delivers a 57 hours power reserve. [seikata-wm-bcbf201ebf49]

Also known as: Sumo

Specifications

Movement
Hand-Winding
Case Material
Two-Tone
Case Width
44mm
Case Thickness
15.3mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Inner Rotating
Water Resistance
150m
Dial Color
Black
Jewels
35j
Frequency
21,600 bph
Power Reserve
57 hours
Year
1969

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