Seiko Cal. 3880 - 364

The Seiko 3880-364 represents an important milestone in Seiko's 1986 lineup. With its 18mm lug width and 15.9mm profile, it sits comfortably on most wrists. [seikata-wm-0c070b6f7f9d]

Also known as: Helmet, World Timer

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

36mm

Case Thickness

15.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Burgundy

Jewels

21j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1986

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