Seiko Cal. 5231 - 363

The Seiko 5231-363 represents an important milestone in Seiko's 1971 lineup. Powered by the 5231 caliber with 27j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-0a01955eb68b]

Also known as: Samurai, Sea Horse

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

34mm

Case Thickness

9.5mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

200m

Dial Color

Silver

Jewels

27j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1971

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