Seiko Cal. 5663 - 651

This Spring Drive model from 1997 features a 37mm Gold-Plated case. With its 19mm lug width and 9.0mm profile, it sits comfortably on most wrists. [seikata-wm-bd15bd7eb486]

Also known as: UFO, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1997

Related Models

• Seiko 3863-408
• Seiko 5222-521
• Seiko 5672-123
• Seiko 4428-342
• Seiko 4446-299
• Seiko 3894-815
• Seiko 3837-776
• Seiko 6610-848
• Seiko 6114-595
• Seiko 4569-488
• Seiko 4468-322
• Seiko 6398-600