Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. Features 6 fixed frequencies including: 1 Hz, 10 Hz, 130 Hz, and 150 Hz.) * Also Features: 6 pre-modulated frequency sweeps including: 80-150 Hz pain, 0-10 Hz edema, 1-150 Hz rehab, 0-15 Hz, 10-100 Hz, 80-120 Hz. * Includes dual intensity controls *