Seiko Cal. 4427 - 378

The 4427-378 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4427 caliber with 27j jewels beating at 21,600 bph, it delivers a 53 hours power reserve. [seikata-wm-c63e8a062099]

Also known as: Sumo, Emperor

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

43mm

Case Thickness

11.1mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Burgundy

Jewels

27j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1965

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