Seiko Cal. 4421 - 610

The 4421-610 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 9.3mm profile, it sits comfortably on most wrists. [seikata-wm-b10dcc32abda]

Also known as: Silverwave, Navigator

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

36mm

Case Thickness

9.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

40m

Dial Color

Black

Jewels

24j

Frequency

21,600 bph

Power Reserve

53 hours

Year

1984

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