Seiko Cal. 4413 - 639

The Seiko 4413-639 represents an important milestone in Seiko's 1984 lineup. It features a White dial protected by a Acrylic crystal and offers 180m of water resistance. [seikata-wm-002f513c3b1a]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

180m

Dial Color

White

Jewels

25j

Frequency

21,600 bph

Power Reserve

48 hours

Year

1984

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