Seiko Cal. 6637 - 429

This Spring Drive model from 1980 features a 35mm Titanium case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-5f8223240359]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

10.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1980

Related Models

• Seiko 6389-959
• Seiko 5655-512
• Seiko 7013-684
• Seiko 0714-680
• Seiko 7050-285
• Seiko 0714-770
• Seiko 7127-269
• Seiko 6216-312
• Seiko 3813-951
• Seiko 0756-465
• Seiko 4549-292
• Seiko 3841-622