Seiko Cal. 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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