Seiko Cal. 6641 - 380

The Seiko 6641-380 represents an important milestone in Seiko's 1999 lineup. With its 21mm lug width and 9.2mm profile, it sits comfortably on most wrists. [seikata-wm-9e649bfeda84]

Also known as: Monster, Tuna

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

9.2mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Silver

Jewels

20j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1999

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