Seiko Cal. 5638 - 566

The 5638-566 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 13.5mm profile, it sits comfortably on most wrists. [seikata-wm-ea86621cac29]

Also known as: Crown, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Burgundy

Jewels

30j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1981

Related Models

• Seiko 6194-469
• Seiko 7081-604
• Seiko 4419-285
• Seiko 6668-243
• Seiko 6197-231
• Seiko 5230-732
• Seiko 7020-158
• Seiko 4410-805
• Seiko 6262-512
• Seiko 6374-243
• Seiko 6616-185
• Seiko 4592-673