Seiko Cal. 4421 - 831

The Seiko 4421-831 represents an important milestone in Seiko's 1976 lineup. It features a Cream dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-a0efecf45eee]

Also known as: Tuna, Rally

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

39mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Cream

Jewels

33j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1976

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