Seiko Cal. 3840 - 637

The Seiko 3840-637 represents an important milestone in Seiko's 1984 lineup. The Coin-Edge bezel and 44mm case give it a distinctive presence on the wrist. [seikata-wm-4ea810ef0423]

Also known as: Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

44mm

Case Thickness

15.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Champagne

Jewels

30j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1984

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