Seiko Cal. 6637 - 375

This Hand-Winding model from 1968 features a 36mm Two-Tone case. With its 19mm lug width and 14.2mm profile, it sits comfortably on most wrists. [seikata-wm-017ae5fc739a]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1968

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