Sound Town Professional Dual-Channel UHF Handheld Wireless Microphone System with Selectable Frequencies 2 Handheld Mics (SWM20-U2HH V2). The Sound Town SWM20-U2HHV2 combines stellar sound and ease of use into a sleek handheld wireless microphone system which won t break your bank. It comes with dual-channel up to 200 selectable UHF frequencies (530-580MHz). This helps minimize the chances of getting interference from other electronic equipment. The two handheld wireless microphones employ a cardioid pickup pattern which yields superb sound feedback and isolates noises in the background.