Seiko Cal. 6347 - 691

The Seiko 6347-691 represents an important milestone in Seiko's 1971 lineup. It features a Black dial protected by a Mineral crystal and offers 90m of water resistance. [seikata-wm-30efa3b530a4]

Also known as: Tuna, Arnie

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

43mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

90m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1971

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