Seiko Cal. 6638 - 858

This Solar model from 1998 features a 38mm Gold-Plated case. With its 20mm lug width and 15.7mm profile, it sits comfortably on most wrists. [seikata-wm-f73b299a6e0f]

Also known as: Monster, Sportsmatic

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

38mm

Case Thickness

15.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Cream

Jewels

22j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1998

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