Seiko Cal. 4440 - 507

The 4440-507 is a sought-after Spring Drive piece from Seiko's golden era. The Bidirectional bezel and 35mm case give it a distinctive presence on the wrist. [seikata-wm-6fd4cb0a4417]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

35mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

120m

Dial Color

Green

Jewels

19j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1984

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