Seiko Cal. 5638 - 358

The 5638-358 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5638 caliber with 36j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-d96e5996ffd2]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

13.3mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

150m

Dial Color

Green

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1981

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