Seiko Cal. 4427 - 740

The Seiko 4427-740 represents an important milestone in Seiko's 1989 lineup. Powered by the 4427 caliber with 22j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-643927787508]

Also known as: Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

38mm

Case Thickness

10.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

170m

Dial Color

Navy

Jewels

22j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1989

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