Seiko Cal. 6137 - 831

The Seiko 6137-831 represents an important milestone in Seiko's 1973 lineup. With its 18mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-d00ef7d31c14]

Also known as: Bellmatic

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

180m

Dial Color

Burgundy

Jewels

32j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1973

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