Seiko Cal. 4428 - 292

The Seiko 4428-292 represents an important milestone in Seiko's 1972 lineup. The Coin-Edge bezel and 40mm case give it a distinctive presence on the wrist. [seikata-wm-8407987266ff]

Also known as: Bellmatic, Flighty

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

13.9mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Navy

Jewels

28j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1972

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