Seiko Cal. 4420 - 974

The Seiko 4420-974 represents an important milestone in Seiko's 1982 lineup. The Coin-Edge bezel and 36mm case give it a distinctive presence on the wrist. [seikata-wm-ef632fd24167]

Also known as: Tuna

Specifications

Movement

Kinetic

Case Material

Two-Tone

Case Width

36mm

Case Thickness

13.9mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Black

Jewels

32j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1982

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