Seiko Cal. 6657 - 237

The Seiko 6657-237 represents an important milestone in Seiko's 1997 lineup. It features a Silver dial protected by a Acrylic crystal and offers 80m of water resistance. [seikata-wm-2bddcabd032e]

Also known as: Monster, Sumo

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

80m

Dial Color

Silver

Jewels

30j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1997

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