Seiko Cal. 5638 - 302

The Seiko 5638-302 represents an important milestone in Seiko's 1973 lineup. Powered by the 5638 caliber with 20j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-2907b3f0079f]

Also known as: Monster, UFO

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

14.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

White

Jewels

20j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1973

Related Models

• Seiko 4480-192
• Seiko 4574-634
• Seiko 6146-837
• Seiko 4525-392
• Seiko 6227-829
• Seiko 6642-778
• Seiko 0735-408
• Seiko 6171-424
• Seiko 6251-522
• Seiko 6370-612
• Seiko 7179-251
• Seiko 4487-285