Seiko Cal. 4447 - 512

The 4447-512 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 4447 caliber with 18j jewels beating at 28,800 bph, it delivers a 54 hours power reserve. [seikata-wm-ca7bf64c6310]

Also known as: Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

43mm

Case Thickness

11.9mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

150m

Dial Color

Blue Sunburst

Jewels

18j

Frequency

28,800 bph

Power Reserve

54 hours

Year

1997

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