Seiko Cal. 6685 - 391

The Seiko 6685-391 represents an important milestone in Seiko's 1980 lineup. Powered by the 6685 caliber with 30j jewels beating at 28,800 bph, it delivers a 42 hours power reserve. [seikata-wm-9c4f768d14f8]

Also known as: Monster, Shogun

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

12.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

30j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1980

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