Seiko Cal. 4478 - 447

The 4478-447 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4478 caliber with 22j jewels beating at 36,000 bph, it delivers a 64 hours power reserve. [seikata-wm-362ac4ae5c2a]

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

8.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

150m

Dial Color

Burgundy

Jewels

22j

Frequency

36,000 bph

Power Reserve

64 hours

Year

1965

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