Seiko Cal. 4431 - 789

The Seiko 4431-789 represents an important milestone in Seiko's 1984 lineup. It features a Black dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-4b19d4267076]

Also known as: Tuna

Specifications

Movement

Automatic

Case Material

Gold-Plated

Case Width

42mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Black

Jewels

34j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1984

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