Seiko Cal. 6688 - 317

The Seiko 6688-317 represents an important milestone in Seiko's 1969 lineup. With its 22mm lug width and 9.8mm profile, it sits comfortably on most wrists. [seikata-wm-f71cbb2afa7b]

Also known as: Bellmatic, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

37mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

38 hours

Year

1969

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