Seiko Cal. 6391 - 351

The Seiko 6391-351 represents an important milestone in Seiko's 1989 lineup. Powered by the 6391 caliber with 24j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-f85fa259b1af]

Also known as: Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

80m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1989

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