Seiko Cal. 6637 - 604

Released in 1988, the Cal. 6637 with design code 604 was part of Seiko's domestic market collection. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-14bb25ad3348]

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

37mm

Case Thickness

10.9mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

30m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1988

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