Seiko Cal. 7031 - 577

Seiko 7031-577

The 7031-577 is a sought-after Solar piece from Seiko's golden era. Powered by the 7031 caliber with 23j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-df739fab77d3]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
37mm
Case Thickness
11.8mm
Lug Width
20mm
Crystal
Mineral
Bezel
Inner Rotating
Water Resistance
120m
Dial Color
Blue Sunburst
Jewels
23j
Frequency
36,000 bph
Power Reserve
48 hours
Year
1966

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