Seiko Cal. 4427 - 713

Released in 1978, the Cal. 4427 with design code 713 was part of Seiko's domestic market collection. With its 22mm lug width and 13.1mm profile, it sits comfortably on most wrists. [seikata-wm-bab09eae4b06]

Also known as: Bullhead

Specifications

Movement

Quartz

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

13.1mm

Lug Width

22mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

160m

Dial Color

Navy

Jewels

24j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1978

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