Seiko Cal. 4486 - 638

The 4486-638 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4486 caliber with 26j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-7ddec209fadc]

Also known as: Tuna, Arnie

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

39mm

Case Thickness

15.0mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

80m

Dial Color

Burgundy

Jewels

26j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1968

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