Seiko Cal. 3879 - 999

The Seiko 3879-999 represents an important milestone in Seiko's 1985 lineup. It features a Navy dial protected by a Sapphire crystal and offers 90m of water resistance. [seikata-wm-4a01e0c83752]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

42mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Navy

Jewels

20j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1985

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