Seiko Cal. 6391 - 893

The 6391-893 is a sought-after Automatic piece from Seiko's golden era. Powered by the 6391 caliber with 29j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-04aba1ccd75a]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

44mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

29j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1991

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