Seiko Cal. 4441 - 723

The 4441-723 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4441 caliber with 33j jewels beating at 36,000 bph, it delivers a 57 hours power reserve. [seikata-wm-9c0d24376207]

Also known as: UFO, Navigator

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.0mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

33j

Frequency

36,000 bph

Power Reserve

57 hours

Year

1991

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