Seiko Cal. 4427 - 305

The 4427-305 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4427 caliber with 18j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-2c2d3455876c]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

36mm

Case Thickness

9.6mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Silver

Jewels

18j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1987

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