Seiko Cal. 4421 - 478

The Seiko 4421-478 represents an important milestone in Seiko's 1976 lineup. It features a White dial protected by a Acrylic crystal and offers 90m of water resistance. [seikata-wm-9da38d156fc2]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

15.4mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

90m

Dial Color

White

Jewels

30j

Frequency

28,800 bph

Power Reserve

45 hours

Year

1976

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