Seiko Cal. 6623 - 761

This Hand-Winding model from 1991 features a 37mm Hardlex-Coated Steel case. With its 18mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-770f750779c4]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

12.1mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

59 hours

Year

1991

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