Seiko Cal. 4590 - 646

The 4590-646 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 11.9mm profile, it sits comfortably on most wrists. [seikata-wm-5cf0eed7bde7]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

11.9mm

Lug Width

21mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

30j

Frequency

21,600 bph

Power Reserve

56 hours

Year

1977

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