Seiko Cal. 6391 - 411

The Seiko 6391-411 represents an important milestone in Seiko's 1989 lineup. The Bidirectional bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-b9a464cb4128]

Also known as: Sumo, Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

36mm

Case Thickness

13.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1989

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