Seiko Cal. 4480 - 637

The 4480-637 is a sought-after Automatic piece from Seiko's golden era. With its 21mm lug width and 10.9mm profile, it sits comfortably on most wrists. [seikata-wm-6b0a0bc01ec8]

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

37mm

Case Thickness

10.9mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

90m

Dial Color

Black

Jewels

21j

Frequency

21,600 bph

Power Reserve

57 hours

Year

1983

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