Seiko Cal. 4446 - 947

The 4446-947 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4446 caliber with 22j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-740118a1221b]

Also known as: Silverwave, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

36mm

Case Thickness

8.0mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1979

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