Seiko Cal. 4428 - 470

The Seiko 4428-470 represents an important milestone in Seiko's 1988 lineup. With its 21mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-6a7a340749ea]

Also known as: Helmet, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

42mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

110m

Dial Color

White

Jewels

23j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1988

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