Seiko Cal. 5639 - 148

The Seiko 5639-148 represents an important milestone in Seiko's 1975 lineup. With its 19mm lug width and 13.9mm profile, it sits comfortably on most wrists. [seikata-wm-36bba372c274]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

42mm

Case Thickness

13.9mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

Blue Sunburst

Jewels

31j

Frequency

36,000 bph

Power Reserve

66 hours

Year

1975

Related Models

• Seiko 6687-754
• Seiko 6234-659
• Seiko 7084-683
• Seiko 0763-838
• Seiko 4534-304
• Seiko 0789-926
• Seiko 4531-689
• Seiko 3811-702
• Seiko 6329-718
• Seiko 5227-917
• Seiko 6180-953
• Seiko 7118-776