Seiko Cal. 5641 - 561

This Spring Drive model from 1974 features a 42mm Two-Tone case. It features a Blue Sunburst dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-4512467c6206]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

42mm

Case Thickness

11.9mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1974

Related Models

• Seiko 5275-267
• Seiko 0782-626
• Seiko 3824-162
• Seiko 7150-398
• Seiko 4514-183
• Seiko 6682-801
• Seiko 6376-568
• Seiko 7178-578
• Seiko 6618-919
• Seiko 6252-498
• Seiko 3837-437
• Seiko 6123-410