Seiko Cal. 4420 - 313

The Seiko 4420-313 represents an important milestone in Seiko's 1986 lineup. With its 22mm lug width and 8.6mm profile, it sits comfortably on most wrists. [seikata-wm-83f6e9b04b27]

Also known as: UFO, Crown

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

37mm

Case Thickness

8.6mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1986

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