Seiko Cal. 4428 - 633

The Seiko 4428-633 represents an important milestone in Seiko's 1975 lineup. With its 22mm lug width and 14.1mm profile, it sits comfortably on most wrists. [seikata-wm-920275b4b704]

Also known as: Pogue, Baby Tuna

Specifications

Movement

Automatic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

14.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

26j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1975

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