Seiko Cal. 6688 - 396

This Spring Drive model from 1989 features a 38mm PVD Black case. It features a Green dial protected by a Hardlex crystal and offers 30m of water resistance. [seikata-wm-0c40a8d7e43a]

Also known as: Sumo, Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1989

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