Seiko Cal. 5638 - 326

The Seiko 5638-326 represents an important milestone in Seiko's 1969 lineup. With its 18mm lug width and 15.8mm profile, it sits comfortably on most wrists. [seikata-wm-1e2ff0aa7f70]

Also known as: Turtle, Rally

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

15.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

19j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1969

Related Models

• Seiko 6277-275
• Seiko 7131-707
• Seiko 6654-149
• Seiko 6637-449
• Seiko 6638-931
• Seiko 5219-764
• Seiko 5211-831
• Seiko 7085-588
• Seiko 0713-209
• Seiko 0786-395
• Seiko 6352-170
• Seiko 0715-178