Seiko Cal. 4531 - 729

This Hand-Winding model from 1983 features a 41mm Hardlex-Coated Steel case. Powered by the 4531 caliber with 36j jewels beating at 21,600 bph, it delivers a 51 hours power reserve. [seikata-wm-f8caa0fe9cd5]

Also known as: Bellmatic, Emperor

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

8.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

36j

Frequency

21,600 bph

Power Reserve

51 hours

Year

1983

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