Seiko Cal. 3831 - 380

The Seiko 3831-380 represents an important milestone in Seiko's 1966 lineup. With its 18mm lug width and 11.4mm profile, it sits comfortably on most wrists. [seikata-wm-0a8d20fba647]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

11.4mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Silver

Jewels

20j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1966

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