Original NovaFon / NostraFon Model SK1 Intrasonic Wave Instrument w/ Sonic Ball and Sonic Disc in excellent condition. This unit looks and functions perfectly, and uses Sound Wave Therapy for cell repair. For complete details on what this amazing device can do, please see the attached pictures that show all information from the manual that you will receive with the unit. The quality of this device, made in Germany, is excellent. Please feel free to ask any questions.