Seiko Cal. 4562 - 638

This Hand-Winding model from 1972 features a 37mm Hardlex-Coated Steel case. Powered by the 4562 caliber with 18j jewels beating at 28,800 bph, it delivers a 36 hours power reserve. [seikata-wm-710626c2eeea]

Also known as: Tuna, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

14.8mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

30m

Dial Color

White

Jewels

18j

Frequency

28,800 bph

Power Reserve

36 hours

Year

1972

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