Seiko Cal. 4428 - 422

Released in 1991, the Cal. 4428 with design code 422 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Sapphire crystal and offers 150m of water resistance. [seikata-wm-e46e343f70d7]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

10.6mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

150m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1991

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