Seiko Cal. 3817 - 548

The Seiko 3817-548 represents an important milestone in Seiko's 1979 lineup. It features a White dial protected by a Hardlex crystal and offers 140m of water resistance. [seikata-wm-fd1daa67b332]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

37mm

Case Thickness

15.8mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

White

Jewels

32j

Frequency

36,000 bph

Power Reserve

71 hours

Year

1979

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