Seiko Cal. 6647 - 446

The Seiko 6647-446 represents an important milestone in Seiko's 1971 lineup. It features a White dial protected by a Hardlex crystal and offers 120m of water resistance. [seikata-wm-e3920f2b3f59]

Also known as: Bullhead

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

10.0mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

120m

Dial Color

White

Jewels

22j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1971

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