Seiko Cal. 5638 - 768

The 5638-768 is a sought-after Solar piece from Seiko's golden era. Powered by the 5638 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-41e66306151e]

Also known as: Flighty

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

10.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

100m

Dial Color

White

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1970

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