Seiko Cal. 6637 - 604

The Seiko 6637-604 represents an important milestone in Seiko's 1991 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 60m of water resistance. [seikata-wm-1100da23aadd]

Also known as: Rally

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

13.3mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Burgundy

Jewels

19j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1991

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