Seiko Cal. 3831 - 284

The Seiko 3831-284 represents an important milestone in Seiko's 1976 lineup. It features a Silver dial protected by a Acrylic crystal and offers 140m of water resistance. [seikata-wm-e54550ecf854]

Also known as: Monster, Sumo

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

42mm

Case Thickness

9.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

22j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1976

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