Seiko Cal. 4421 - 898

Released in 1991, the Cal. 4421 with design code 898 was part of Seiko's domestic market collection. It features a Green dial protected by a Acrylic crystal and offers 160m of water resistance. [seikata-wm-68a1bf1be376]

Also known as: Sumo, UFO

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

43mm

Case Thickness

8.6mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

160m

Dial Color

Green

Jewels

32j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1991

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