Seiko Cal. 6688 - 143

The Seiko 6688-143 represents an important milestone in Seiko's 1990 lineup. It features a Green dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-e7ef53274e5d]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

43mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

56 hours

Year

1990

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