Seiko Cal. 3880 - 638

The Seiko 3880-638 represents an important milestone in Seiko's 1976 lineup. Powered by the 3880 caliber with 19j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-35c86f24f591]

Also known as: Silverwave, Goldfeather

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

12.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Black

Jewels

19j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1976

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