Seiko Cal. 6317 - 256

The Seiko 6317-256 represents an important milestone in Seiko's 1979 lineup. Powered by the 6317 caliber with 17j jewels beating at 28,800 bph, it delivers a 40 hours power reserve. [seikata-wm-f5e0dedc2c69]

Also known as: Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Burgundy

Jewels

17j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1979

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