Seiko Cal. 4420 - 277

Released in 1994, the Cal. 4420 with design code 277 was part of Seiko's domestic market collection. With its 19mm lug width and 9.1mm profile, it sits comfortably on most wrists. [seikata-wm-77cb72cae2f9]

Also known as: Helmet, Emperor

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

9.1mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

White

Jewels

21j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1994

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