Seiko Cal. 3880 - 378

The Seiko 3880-378 represents an important milestone in Seiko's 1975 lineup. Powered by the 3880 caliber with 34j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-5d7eb0c749bd]

Also known as: Samurai, Sumo

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Navy

Jewels

34j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1975

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