Seiko Cal. 6650 - 450

This Hand-Winding model from 1974 features a 41mm Stainless Steel case. With its 19mm lug width and 11.6mm profile, it sits comfortably on most wrists. [seikata-wm-a1a1c16d8ad4]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

110m

Dial Color

Burgundy

Jewels

17j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1974

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