Seiko Cal. 5638 - 335

The Seiko 5638-335 represents an important milestone in Seiko's 1972 lineup. Powered by the 5638 caliber with 27j jewels beating at 36,000 bph, it delivers a 47 hours power reserve. [seikata-wm-b764f4f9e9a3]

Also known as: Crown, Emperor

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

11.5mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1972

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