Seiko Cal. 4439 - 501

The 4439-501 is a sought-after Spring Drive piece from Seiko's golden era. It features a Blue Sunburst dial protected by a Hardlex crystal and offers 90m of water resistance. [seikata-wm-b8121a4f9d30]

Also known as: Monster, UFO

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

40mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

90m

Dial Color

Blue Sunburst

Jewels

27j

Frequency

21,600 bph

Power Reserve

49 hours

Year

1976

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