Seiko Cal. 6633 - 642

The Seiko 6633-642 represents an important milestone in Seiko's 1986 lineup. With its 19mm lug width and 11.3mm profile, it sits comfortably on most wrists. [seikata-wm-52e0a90ca58e]

Also known as: Golden Tuna

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

11.3mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1986

Related Models

• Seiko 6298-652
• Seiko 0739-270
• Seiko 4532-746
• Seiko 5234-612
• Seiko 6143-478
• Seiko 6145-785
• Seiko 5213-635
• Seiko 6156-408
• Seiko 7031-629
• Seiko 6138-330
• Seiko 4457-288
• Seiko 6132-220