Seiko Cal. 4441 - 727

This Spring Drive model from 1971 features a 36mm Stainless Steel case. Powered by the 4441 caliber with 29j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-6d4b1335d70f]

Also known as: Monster, UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.8mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Cream

Jewels

29j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1971

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