The TheoryPhone 4 was released in 2004 by Theorysonic.

What's in the box

  • 1 x 3.5mm stereo headphones
  • 1 x MetroCon charger adapter
  • 1 x White MetroCon USB cable
  • 1 x TheoryPhone 4
  • 1 x Battery
  • 1 x User guide
  • 1 x Documentation

Technical specifications

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