Seiko Cal. 6391 - 264

The 6391-264 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 6391 caliber with 33j jewels beating at 21,600 bph, it delivers a 46 hours power reserve. [seikata-wm-907de6ffe754]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

14.6mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

70m

Dial Color

Silver

Jewels

33j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1993

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