Seiko Cal. 6670 - 406

The Seiko 6670-406 represents an important milestone in Seiko's 1974 lineup. The Bidirectional bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-71099af14668]

Also known as: Sportsmatic, Emperor

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

8.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1974

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