Seiko Cal. 3878 - 438

The Seiko 3878-438 represents an important milestone in Seiko's 1971 lineup. The Fixed bezel and 42mm case give it a distinctive presence on the wrist. [seikata-wm-d99968608eb3]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

42mm

Case Thickness

14.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

40m

Dial Color

Green

Jewels

21j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1971

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