Seiko Cal. 6391 - 144

Released in 1975, the Cal. 6391 with design code 144 was part of Seiko's domestic market collection. Powered by the 6391 caliber with 19j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-2aef06c567e4]

Also known as: Rally, Sea Horse

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

42mm

Case Thickness

11.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

19j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1975

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