Seiko Cal. 6391 - 217

The Seiko 6391-217 represents an important milestone in Seiko's 1985 lineup. Powered by the 6391 caliber with 31j jewels beating at 28,800 bph, it delivers a 52 hours power reserve. [seikata-wm-e95d0c9d3203]

Also known as: Shogun, Tuna

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

39mm

Case Thickness

15.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

31j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1985

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