Seiko Cal. 6317 - 390

The Seiko 6317-390 represents an important milestone in Seiko's 1987 lineup. Powered by the 6317 caliber with 33j jewels beating at 28,800 bph, it delivers a 55 hours power reserve. [seikata-wm-889bd0e7cc8c]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

100m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1987

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