Seiko Cal. 6391 - 745

The Seiko 6391-745 represents an important milestone in Seiko's 1992 lineup. Powered by the 6391 caliber with 17j jewels beating at 21,600 bph, it delivers a 52 hours power reserve. [seikata-wm-39c38e94163d]

Also known as: UFO, Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

14.7mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

130m

Dial Color

Navy

Jewels

17j

Frequency

21,600 bph

Power Reserve

52 hours

Year

1992

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