Seiko Cal. 6688 - 857

The 6688-857 is a sought-after Spring Drive piece from Seiko's golden era. It features a Black dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-339ecb106268]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

38mm

Case Thickness

13.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1997

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