Seiko Cal. 6621 - 403

This Hand-Winding model from 1965 features a 40mm Hardlex-Coated Steel case. With its 22mm lug width and 10.6mm profile, it sits comfortably on most wrists. [seikata-wm-2a8550b715e8]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

50m

Dial Color

Green

Jewels

21j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1965

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