Seiko Cal. 4420 - 549

The Seiko 4420-549 represents an important milestone in Seiko's 1986 lineup. With its 20mm lug width and 9.7mm profile, it sits comfortably on most wrists. [seikata-wm-272d4995acfa]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

37 hours

Year

1986

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