Seiko Cal. 6637 - 142

The Seiko 6637-142 represents an important milestone in Seiko's 1969 lineup. With its 19mm lug width and 9.9mm profile, it sits comfortably on most wrists. [seikata-wm-6cf4b08f7679]

Also known as: Helmet

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

White

Jewels

35j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1969

Related Models

• Seiko 5614-163
• Seiko 5265-500
• Seiko 4599-473
• Seiko 6690-259
• Seiko 5625-723
• Seiko 6684-922
• Seiko 0729-450
• Seiko 0797-185
• Seiko 3856-906
• Seiko 5232-810
• Seiko 6242-801
• Seiko 7198-702