Seiko Cal. 6637 - 435

This Hand-Winding model from 1988 features a 46mm Two-Tone case. With its 20mm lug width and 12.6mm profile, it sits comfortably on most wrists. [seikata-wm-f320a44c8f57]

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

46mm

Case Thickness

12.6mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Cream

Jewels

20j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1988

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