Seiko Cal. 6641 - 371

The 6641-371 is a sought-after Solar piece from Seiko's golden era. With its 18mm lug width and 10.8mm profile, it sits comfortably on most wrists. [seikata-wm-198746c30f1f]

Also known as: Tuna, Emperor

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

100m

Dial Color

Cream

Jewels

27j

Frequency

36,000 bph

Power Reserve

60 hours

Year

1975

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