Seiko Cal. 3873 - 820

The Seiko 3873-820 represents an important milestone in Seiko's 1989 lineup. It features a Green dial protected by a Acrylic crystal and offers 100m of water resistance. [seikata-wm-4a75c30c0023]

Also known as: Navigator, Crown

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Green

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1989

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