SELECTABLE CHANNEL & VOLUME CONTROL– Dual channel wireless microphone delivers multi frequencies & volume control, just press buttons on transmitter to select desired frequency & volume level to reach its best performance without interference. Multi –Applications - Wireless receiver with universal 1/4” plug works with mixer, PA speaker w/ 1/4 MIC IN Jack, smartphone, ideal for presentation, preaching, training, fitness /exercise instructor, wedding. WIRELESS HEADSET & LAVALIER – Condenser headset microphone offers secure wear for vocal performance, clip on microphone offers invisibility on shirt collar, both make hands free to use in interview, classroom, gym, stage, church, meeting. BEST CHOICE FOR VIDEO RECORDING – Plug the head worn or clip microphone to the body pack transmitter & plug mini receiver with hot shoe mount to your DSLR camera or phone (with include adaptor/cable), you are ready to take your exciting video. SUPERIOR SOUND & PERFORMANCE – Dual uhf wireless lapel microphone delivers crystal clear sound & metal belt pack transmitter with mini receiver offer noise cancelling transmission range up to 40ft without feedback or distortion.