Seiko Cal. 4478 - 217

The 4478-217 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 8.1mm profile, it sits comfortably on most wrists. [seikata-wm-76c27f0bcc3f]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

8.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Cream

Jewels

21j

Frequency

21,600 bph

Power Reserve

68 hours

Year

1989

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