Seiko Cal. 5639 - 481

This Hand-Winding model from 1988 features a 41mm Stainless Steel case. Powered by the 5639 caliber with 24j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-2216b76c2a58]

Also known as: Helmet, Navigator

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

10.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

Silver

Jewels

24j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1988

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