Seiko Cal. 6391 - 448

The Seiko 6391-448 represents an important milestone in Seiko's 1996 lineup. Powered by the 6391 caliber with 17j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-86ab4562ff3f]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

34mm

Case Thickness

9.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Silver

Jewels

17j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1996

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