Seiko Cal. 4423 - 220

This Spring Drive model from 1991 features a 40mm Titanium case. It features a Navy dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-6ec5846f69d9]

Also known as: UFO, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

15.1mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Navy

Jewels

28j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1991

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