Seiko Cal. 3817 - 555

The Seiko 3817-555 represents an important milestone in Seiko's 1981 lineup. It features a Navy dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-845a6faee322]

Also known as: Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

35mm

Case Thickness

12.4mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

140m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1981

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