Seiko Cal. 3881 - 903

The Seiko 3881-903 represents an important milestone in Seiko's 1977 lineup. Powered by the 3881 caliber with 25j jewels beating at 28,800 bph, it delivers a 41 hours power reserve. [seikata-wm-ef2bf42676a3]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

14.4mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Cream

Jewels

25j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1977

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