Seiko Cal. 3899 - 638

The 3899-638 is a sought-after Quartz piece from Seiko's golden era. Powered by the 3899 caliber with 18j jewels beating at 21,600 bph, it delivers a 64 hours power reserve. [seikata-wm-3ce8e112116c]

Also known as: Sea Horse

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

37mm

Case Thickness

15.3mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

18j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1969

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