Seiko Cal. 4421 - 764

The Seiko 4421-764 represents an important milestone in Seiko's 1967 lineup. It features a Black dial protected by a Sapphire crystal and offers 140m of water resistance. [seikata-wm-0d67c0d30f53]

Also known as: Bullhead, Flighty

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

41mm

Case Thickness

9.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Black

Jewels

25j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1967

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