Seiko Cal. 5678 - 931

Released in 1986, the Cal. 5678 with design code 931 was part of Seiko's domestic market collection. Powered by the 5678 caliber with 21j jewels beating at 28,800 bph, it delivers a 62 hours power reserve. [seikata-wm-b3da3202e259]

Also known as: Sea Horse, Emperor

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

8.5mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Burgundy

Jewels

21j

Frequency

28,800 bph

Power Reserve

62 hours

Year

1986

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