Seiko Cal. 4428 - 852

The Seiko 4428-852 represents an important milestone in Seiko's 1969 lineup. The Rotating bezel and 37mm case give it a distinctive presence on the wrist. [seikata-wm-b3d70ba43d3a]

Also known as: Monster, Emperor

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

8.7mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

40m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1969

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