Seiko Cal. 4420 - 764

This Hand-Winding model from 1993 features a 38mm Hardlex-Coated Steel case. With its 19mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-fc0b00633b86]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1993

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