Seiko Cal. 6637 - 612

The Seiko 6637-612 represents an important milestone in Seiko's 1990 lineup. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 160m of water resistance. [seikata-wm-62ea390a012a]

Also known as: Rally, Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

9.4mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1990

Related Models

• Seiko 6315-713
• Seiko 6166-247
• Seiko 5289-780
• Seiko 6347-727
• Seiko 0765-709
• Seiko 5666-346
• Seiko 6670-255
• Seiko 6196-526
• Seiko 6363-518
• Seiko 0765-718
• Seiko 6328-354
• Seiko 5640-615