Seiko Cal. 5639 - 703

This Hand-Winding model from 1974 features a 37mm Gold-Plated case. Powered by the 5639 caliber with 23j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-3ddfbd83078c]

Also known as: Silverwave

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

23j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1974

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