Seiko Cal. 4428 - 351

The Seiko 4428-351 represents an important milestone in Seiko's 1977 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-93e4437ccf52]

Also known as: Bullhead, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

190m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1977

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