Seiko Cal. 4428 - 797

The Seiko 4428-797 represents an important milestone in Seiko's 1970 lineup. The Rotating bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-065f43d86196]

Also known as: UFO, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

35mm

Case Thickness

14.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

80m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

50 hours

Year

1970

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