Seiko Cal. 7031 - 478

Seiko 7031-478

The 7031-478 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7031 caliber with 29j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-5a249affa343]

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
36mm
Case Thickness
10.9mm
Lug Width
18mm
Crystal
Acrylic
Bezel
Coin-Edge
Water Resistance
60m
Dial Color
Blue Sunburst
Jewels
29j
Frequency
21,600 bph
Power Reserve
53 hours
Year
1991

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seikata-wm-5a249affa343