Seiko Cal. 5639 - 523

The Seiko 5639-523 represents an important milestone in Seiko's 1978 lineup. With its 22mm lug width and 9.4mm profile, it sits comfortably on most wrists. [seikata-wm-e4a249e75b0f]

Also known as: UFO, Crown

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.4mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

130m

Dial Color

Burgundy

Jewels

26j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1978

Related Models

• Seiko 0714-889
• Seiko 7143-111
• Seiko 6170-440
• Seiko 3838-644
• Seiko 3830-218
• Seiko 4446-511
• Seiko 6154-443
• Seiko 6193-149
• Seiko 0728-586
• Seiko 3829-928
• Seiko 4542-635
• Seiko 3881-924