Seiko Cal. 6638 - 541

The 6638-541 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 13.7mm profile, it sits comfortably on most wrists. [seikata-wm-e5ac15dc0c76]

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

38mm

Case Thickness

13.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

130m

Dial Color

Navy

Jewels

30j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1989

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