Seiko Cal. 4428 - 746

The Seiko 4428-746 represents an important milestone in Seiko's 1973 lineup. It features a Navy dial protected by a Sapphire crystal and offers 30m of water resistance. [seikata-wm-5d24c213a6c4]

Also known as: UFO

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

37mm

Case Thickness

11.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Navy

Jewels

28j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1973

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