Seiko Cal. 3831 - 707

The Seiko 3831-707 represents an important milestone in Seiko's 1973 lineup. It features a Green dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-40f607d14239]

Also known as: Helmet, Silverwave

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

34mm

Case Thickness

13.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

60m

Dial Color

Green

Jewels

20j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1973

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