Seiko Cal. 6391 - 807

The Seiko 6391-807 represents an important milestone in Seiko's 1980 lineup. It features a Black dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-4b83bbf958e0]

Also known as: Tuna, Golden Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

150m

Dial Color

Black

Jewels

20j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1980

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