Seiko Cal. 3871 - 788

The Seiko 3871-788 represents an important milestone in Seiko's 1981 lineup. It features a White dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-fcf7ae94efc4]

Also known as: Sumo, Arnie

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

34mm

Case Thickness

13.5mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

140m

Dial Color

White

Jewels

33j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1981

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