Seiko Cal. 4478 - 236

The 4478-236 is a sought-after Spring Drive piece from Seiko's golden era. With its 20mm lug width and 12.5mm profile, it sits comfortably on most wrists. [seikata-wm-8481b7de83de]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

44mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Green

Jewels

35j

Frequency

36,000 bph

Power Reserve

52 hours

Year

1971

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