Seiko Cal. 6647 - 854

The Seiko 6647-854 represents an important milestone in Seiko's 1977 lineup. The Fixed bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-e6fb315764dd]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

22j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1977

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