Seiko Cal. 6641 - 978

The Seiko 6641-978 represents an important milestone in Seiko's 1966 lineup. It features a Burgundy dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-ad321ed01672]

Also known as: Emperor, Arnie

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

8.4mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Burgundy

Jewels

35j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1966

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