Seiko Cal. 7031 - 816

Seiko 7031-816

The 7031-816 is a sought-after Solar piece from Seiko's golden era. Powered by the 7031 caliber with 33j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-9ed6a1523e92]

Also known as: Golden Tuna

Specifications

Movement
Solar
Case Material
Hardlex-Coated Steel
Case Width
40mm
Case Thickness
10.1mm
Lug Width
20mm
Crystal
Mineral
Bezel
Rotating
Water Resistance
170m
Dial Color
Green
Jewels
33j
Frequency
28,800 bph
Power Reserve
60 hours
Year
1979

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