Seiko Cal. 4420 - 337

The Seiko 4420-337 represents an important milestone in Seiko's 1993 lineup. It features a White dial protected by a Sapphire crystal and offers 180m of water resistance. [seikata-wm-d135cc3cd41c]

Also known as: Emperor

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

40mm

Case Thickness

9.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

180m

Dial Color

White

Jewels

19j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1993

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