Seiko Cal. 3816 - 791

This Hand-Winding model from 1966 features a 40mm Titanium case. With its 21mm lug width and 10.2mm profile, it sits comfortably on most wrists. [seikata-wm-f5417b05ee80]

Also known as: UFO, World Timer

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

10.2mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

170m

Dial Color

Champagne

Jewels

18j

Frequency

36,000 bph

Power Reserve

56 hours

Year

1966

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