Seiko Cal. 5638 - 939

This Quartz model from 1985 features a 45mm Stainless Steel case. Powered by the 5638 caliber with 27j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-e97a765143a0]

Also known as: Silverwave

Specifications

Movement

Quartz

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

60m

Dial Color

Black

Jewels

27j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1985

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