Seiko Cal. 3864 - 378

The Seiko 3864-378 represents an important milestone in Seiko's 1985 lineup. It features a Green dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-7dfafef85f31]

Also known as: Sportsmatic, Arnie

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

14.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

40m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1985

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