Seiko Cal. 4420 - 741

The 4420-741 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 4420 caliber with 36j jewels beating at 36,000 bph, it delivers a 44 hours power reserve. [seikata-wm-87a2bb3f8431]

Also known as: UFO, Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

41mm

Case Thickness

11.0mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Rotating

Water Resistance

70m

Dial Color

Black

Jewels

36j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1972

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