Seiko Cal. 6391 - 380

The Seiko 6391-380 represents an important milestone in Seiko's 1988 lineup. Powered by the 6391 caliber with 31j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-f9fabd5d7252]

Also known as: Sumo, Panda

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

38mm

Case Thickness

9.4mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

White

Jewels

31j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1988

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