Seiko Cal. 4428 - 406

Released in 1978, the Cal. 4428 with design code 406 was part of Seiko's domestic market collection. It features a Burgundy dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-d5dc9003b158]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

15.8mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

19j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1978

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