Seiko Cal. 4428 - 670

This Kinetic model from 1977 features a 42mm Hardlex-Coated Steel case. It features a Silver dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-70d42ad24cfe]

Also known as: Baby Tuna, Emperor

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

12.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

180m

Dial Color

Silver

Jewels

25j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1977

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