Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. Four Channel System * Our most popular units, they both offer the convenience of a full-featured Stimulator and Ultrasound in one unit * 4 Waveforms (Interferential, Premodulated, High Volt and Russian) * Ultrasound features include 1 and 3.3 MHz frequencies, 10%, 20%, 50% and Continuous Duty Cycle selections with Head Warming * Bright back-lit LCD display * Optional 2cm2 and 10cm2 soundheads * Includes Nylatex? wraps, 5cm2 soundhead, both red and black 3? round electrodes, lead wires and a 9oz. bottle Conductor Gel as standard equipment * 2 year warranty * High Volt available on all channels * ETL listed and cETL listed *