Seiko Cal. 6643 - 713

This Hand-Winding model from 1998 features a 34mm Hardlex-Coated Steel case. With its 18mm lug width and 15.1mm profile, it sits comfortably on most wrists. [seikata-wm-0ef6af5ece21]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

120m

Dial Color

Black

Jewels

18j

Frequency

21,600 bph

Power Reserve

62 hours

Year

1998

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