Seiko Cal. 3851 - 402

The Seiko 3851-402 represents an important milestone in Seiko's 1979 lineup. It features a Black dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-8910b9a5918a]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

44mm

Case Thickness

15.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

30m

Dial Color

Black

Jewels

26j

Frequency

28,800 bph

Power Reserve

66 hours

Year

1979

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