Seiko Cal. 5637 - 399

The 5637-399 is a sought-after Spring Drive piece from Seiko's golden era. With its 21mm lug width and 12.7mm profile, it sits comfortably on most wrists. [seikata-wm-caa2bacd6ef6]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

140m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1975

Related Models

• Seiko 6693-358
• Seiko 3884-886
• Seiko 3860-845
• Seiko 0738-960
• Seiko 6142-474
• Seiko 5688-807
• Seiko 0729-917
• Seiko 4574-735
• Seiko 6296-789
• Seiko 6349-992
• Seiko 6242-265
• Seiko 6294-442