VocoPro - (DIGITAL32-ULTRA Dual Channel Digital Wireless Handheld/Headset/Instrument SystemEach receiver comes packaged with wireless handheld microphones as well as Body pack transmitter with headset microphone and instrument Cable for added versatility9 channel PLL frequencies designed to not interference with each other integrate up to 9 systems with revolutionary “one-touch” IR syncUtilizes the Sparsely used 900MHz frequency band 24-bit digital Technology delivers clean, professional quality signalIndividual digital microphone IDs eliminate channel Cross-Talk wide frequency response (50 - 20, 000 Hz) ensures natural sounding vocalsNOTE : Kindly refer the User Manual which is available below for reference