Seiko Cal. 4427 - 320

The Seiko 4427-320 represents an important milestone in Seiko's 1977 lineup. Powered by the 4427 caliber with 21j jewels beating at 36,000 bph, it delivers a 52 hours power reserve. [seikata-wm-e38f9ee5d43b]

Also known as: Arnie

Specifications

Movement

Kinetic

Case Material

Titanium

Case Width

44mm

Case Thickness

8.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1977

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