Seiko Cal. 6637 - 402

This Quartz model from 1985 features a 46mm Two-Tone case. With its 19mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-30e3ebcb75c8]

Also known as: Bullhead, Silverwave

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

46mm

Case Thickness

9.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

40m

Dial Color

White

Jewels

36j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1985

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