Seiko Cal. 4446 - 947

Seiko 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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seikata-wm-740118a1221b