Seiko Cal. 7131 - 812

Seiko 7131-812

The 7131-812 is a sought-after Solar piece from Seiko's golden era. Powered by the 7131 caliber with 20j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-3d4cdb1ebe93]

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
34mm
Case Thickness
8.4mm
Lug Width
21mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
110m
Dial Color
Black
Jewels
20j
Frequency
28,800 bph
Power Reserve
59 hours
Year
1978

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