Seiko Cal. 4531 - 204

The Seiko 4531-204 represents an important milestone in Seiko's 1983 lineup. Powered by the 4531 caliber with 25j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-58460267e6e5]

Also known as: Bellmatic, Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

37mm

Case Thickness

10.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

180m

Dial Color

Blue Sunburst

Jewels

25j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1983

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