Seiko Cal. 6671 - 435

The Seiko 6671-435 represents an important milestone in Seiko's 1971 lineup. With its 21mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-eb27bd6a899f]

Also known as: Tuna, Silverwave

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

40mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1971

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