Seiko Cal. 3839 - 640

The Seiko 3839-640 represents an important milestone in Seiko's 1980 lineup. It features a White dial protected by a Sapphire crystal and offers 160m of water resistance. [seikata-wm-4efd3580ae6d]

Also known as: Sportsmatic

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

34mm

Case Thickness

14.4mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

White

Jewels

27j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1980

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