Seiko Cal. 5231 - 361

The Seiko 5231-361 represents an important milestone in Seiko's 1977 lineup. Powered by the 5231 caliber with 23j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-232115cbb68b]

Also known as: Arnie

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

45mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

50m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1977

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