Seiko Cal. 3840 - 941

The Seiko 3840-941 represents an important milestone in Seiko's 1985 lineup. The Bidirectional bezel and 39mm case give it a distinctive presence on the wrist. [seikata-wm-60654d2a58fa]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

130m

Dial Color

White

Jewels

17j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1985

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