Seiko Cal. 3888 - 635

This Spring Drive model from 1977 features a 35mm Stainless Steel case. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-bce8ee546c3a]

Also known as: Navigator

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.8mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1977

Related Models

• Seiko 5230-577
• Seiko 7190-495
• Seiko 6384-990
• Seiko 0762-372
• Seiko 6646-880
• Seiko 5259-945
• Seiko 0789-805
• Seiko 6382-427
• Seiko 6337-502
• Seiko 4543-152
• Seiko 7080-805
• Seiko 6378-137