Seiko Cal. 4420 - 591

Released in 1984, the Cal. 4420 with design code 591 was part of Seiko's domestic market collection. With its 19mm lug width and 12.2mm profile, it sits comfortably on most wrists. [seikata-wm-ebb80fe92a97]

Also known as: UFO, Sea Horse

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

45mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Navy

Jewels

19j

Frequency

28,800 bph

Power Reserve

70 hours

Year

1984

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