Seiko Cal. 4428 - 252

The 4428-252 is a sought-after Solar piece from Seiko's golden era. Powered by the 4428 caliber with 31j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-d291cea847f0]

Also known as: UFO

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

37mm

Case Thickness

10.9mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1967

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