Seiko Cal. 6317 - 657

The Seiko 6317-657 represents an important milestone in Seiko's 1987 lineup. With its 19mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-b2cba0d7400d]

Also known as: Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

190m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

58 hours

Year

1987

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