Seiko Cal. 6317 - 645

The Seiko 6317-645 represents an important milestone in Seiko's 1988 lineup. Powered by the 6317 caliber with 23j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-ba51a9ccd23a]

Also known as: Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.9mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

110m

Dial Color

Green

Jewels

23j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1988

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