Seiko Cal. 4421 - 393

Released in 1992, the Cal. 4421 with design code 393 was part of Seiko's domestic market collection. It features a Champagne dial protected by a Mineral crystal and offers 140m of water resistance. [seikata-wm-893c370a06bb]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

13.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Champagne

Jewels

21j

Frequency

28,800 bph

Power Reserve

47 hours

Year

1992

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