Seiko Cal. 4440 - 312

The Seiko 4440-312 represents an important milestone in Seiko's 1973 lineup. It features a Cream dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-8171eec917df]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

34mm

Case Thickness

9.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

140m

Dial Color

Cream

Jewels

25j

Frequency

21,600 bph

Power Reserve

60 hours

Year

1973

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