Seiko Cal. 5638 - 709

The Seiko 5638-709 represents an important milestone in Seiko's 1979 lineup. Powered by the 5638 caliber with 32j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-2bfda99e45ae]

Also known as: Shogun, Goldfeather

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

40mm

Case Thickness

10.7mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Black

Jewels

32j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1979

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