Seiko Cal. 6641 - 954

Released in 1978, the Cal. 6641 with design code 954 was part of Seiko's domestic market collection. It features a Cream dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-15182c18b650]

Also known as: Emperor

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

10.8mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1978

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