Seiko Cal. 4420 - 237

Released in 1976, the Cal. 4420 with design code 237 was part of Seiko's domestic market collection. It features a Navy dial protected by a Sapphire crystal and offers 190m of water resistance. [seikata-wm-cfa32cb275de]

Also known as: Emperor

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

11.0mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

190m

Dial Color

Navy

Jewels

19j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1976

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