The Humminbird Portable Transducer Single/DualBeam XPT 9 20 T is a hydrodynami...The Humminbird Portable Transducer Single/DualBeam XPT 9 20 T is a hydrodynamic, Single or DualBeam (depending on which fish finder used with), 20/60 degree, 200/83 kHz with built-in temperature.FeaturesCompatible with: Matrix 10, 12, 15, 17, 20, 27,...more