Seiko Cal. 4447 - 721

The 4447-721 is a sought-after Hand-Winding piece from Seiko's golden era. The Rotating bezel and 45mm case give it a distinctive presence on the wrist. [seikata-wm-e287e6fa5eca]

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

45mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

190m

Dial Color

Green

Jewels

29j

Frequency

28,800 bph

Power Reserve

52 hours

Year

1975

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