Seiko Cal. 3878 - 238

The Seiko 3878-238 represents an important milestone in Seiko's 1972 lineup. Powered by the 3878 caliber with 28j jewels beating at 36,000 bph, it delivers a 43 hours power reserve. [seikata-wm-f30080c0015a]

Also known as: Crown

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

44mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Black

Jewels

28j

Frequency

36,000 bph

Power Reserve

43 hours

Year

1972

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