Seiko Cal. 6637 - 170

This Hand-Winding model from 1986 features a 40mm Titanium case. With its 18mm lug width and 11.2mm profile, it sits comfortably on most wrists. [seikata-wm-7a643e57ac0c]

Also known as: Rally, Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

11.2mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

26j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1986

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