Seiko Cal. 4421 - 442

The Seiko 4421-442 represents an important milestone in Seiko's 1971 lineup. It features a White dial protected by a Sapphire crystal and offers 170m of water resistance. [seikata-wm-237899a307ae]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

40mm

Case Thickness

12.6mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

69 hours

Year

1971

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