Seiko Cal. 4437 - 725

This Hand-Winding model from 1984 features a 37mm Stainless Steel case. Powered by the 4437 caliber with 17j jewels beating at 21,600 bph, it delivers a 61 hours power reserve. [seikata-wm-f40917e01fb4]

Also known as: Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

12.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

130m

Dial Color

Blue Sunburst

Jewels

17j

Frequency

21,600 bph

Power Reserve

61 hours

Year

1984

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