Seiko Cal. 5663 - 438

The 5663-438 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5663 caliber with 34j jewels beating at 28,800 bph, it delivers a 50 hours power reserve. [seikata-wm-56d5d58f22fc]

Also known as: Turtle, Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.2mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

50 hours

Year

1982

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