Seiko Cal. 6137 - 355

This Spring Drive model from 1975 features a 41mm Two-Tone case. With its 21mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-ea774770772a]

Also known as: Sumo, Helmet

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

130m

Dial Color

Champagne

Jewels

32j

Frequency

21,600 bph

Power Reserve

43 hours

Year

1975

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