The Wraith is a well rounded and smooth machine. This rotary style cartridge based design has a tuned silky smooth 4.5watt motor coupled with a versatile 3.5 mm stroke. The Wraith is capable of creating crisp and fine lines as well as smoothy blend in beautiful color and shading. With an incredible range of operation between 50 and 190 Hz, you will be able to do everything with these machines, from dot working and color realism at lower frequencies, to smooth and striking lineswork just by turning up the frequency.