Seiko Cal. 4427 - 646

Released in 1997, the Cal. 4427 with design code 646 was part of Seiko's domestic market collection. Powered by the 4427 caliber with 20j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-f5aa0bf5bbde]

Also known as: Bullhead

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

44mm

Case Thickness

10.6mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

60m

Dial Color

Blue Sunburst

Jewels

20j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1997

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