Seiko Cal. 6635 - 690

This Hand-Winding model from 1981 features a 36mm Gold-Plated case. The Fixed bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-3c24ffd63c1d]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Cream

Jewels

33j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1981

Related Models

• Seiko 4537-228
• Seiko 4433-849
• Seiko 7199-427
• Seiko 6641-101
• Seiko 7152-818
• Seiko 5621-320
• Seiko 6133-197
• Seiko 5675-825
• Seiko 5278-528
• Seiko 0772-446
• Seiko 3867-965
• Seiko 6198-607