Seiko Cal. 6331 - 913

Seiko 6331-913

The 6331-913 is a sought-after Solar piece from Seiko's golden era. Powered by the 6331 caliber with 30j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-deeebbf802a5]

Also known as: Rally, Golden Tuna

Specifications

Movement
Solar
Case Material
Stainless Steel
Case Width
39mm
Case Thickness
9.1mm
Lug Width
22mm
Crystal
Mineral
Bezel
Fixed
Water Resistance
180m
Dial Color
White
Jewels
30j
Frequency
36,000 bph
Power Reserve
49 hours
Year
1967

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