Seiko Cal. 4431 - 450

The Seiko 4431-450 represents an important milestone in Seiko's 1969 lineup. It features a Navy dial protected by a Mineral crystal and offers 30m of water resistance. [seikata-wm-afa48eb4d56c]

Also known as: Sea Horse, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

30m

Dial Color

Navy

Jewels

20j

Frequency

21,600 bph

Power Reserve

64 hours

Year

1969

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