Seiko Cal. 5645 - 757

This Hand-Winding model from 1991 features a 37mm Stainless Steel case. With its 20mm lug width and 8.5mm profile, it sits comfortably on most wrists. [seikata-wm-73e3a4c2b07a]

Also known as: UFO, World Timer

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1991

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