Seiko Cal. 3878 - 443

The Seiko 3878-443 represents an important milestone in Seiko's 1968 lineup. With its 19mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-26861ac4d47d]

Also known as: Sumo, Shogun

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.2mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Green

Jewels

30j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1968

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