Seiko Cal. 5641 - 157

The Seiko 5641-157 represents an important milestone in Seiko's 1971 lineup. With its 22mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-44b56f945c17]

Also known as: Helmet, Flighty

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

22j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1971

Related Models

• Seiko 5699-294
• Seiko 6179-383
• Seiko 5233-589
• Seiko 6156-248
• Seiko 5639-416
• Seiko 6161-782
• Seiko 5268-773
• Seiko 4543-682
• Seiko 5653-699
• Seiko 6222-440
• Seiko 7098-533
• Seiko 0780-680