FULL COMPATIBILITY: Connect this Hotec UHF Wireless Microphone Receiver to the 6.35mm (1/4") mic input of any of your sound system like PA, mixers, speakers, amplifiers and karaoke machines, your vocal sound is transmitted to the sound system wirelessly. The receiver has Two XLR individual outputs and one 1/4"/6.35mm mixed output. WORKING FREQUENCY: The system has 64 selectable UHF frequencies, 32 for each Transmitter, less prone to electric appliance interference and offers stable signal transmission with strong anti-interference ability.Operating range can be up to 240 feet line of sight. Press the frequency change button in the receiver to select the appropriate channel in case there is any interference. The NEW upgraded microphone system eliminates interference better. STAGE SOUND QUALITY: High quality sound transmission, clear voice and without feedback, free from distortion. This headset wireless microphone is designed for vocal use in live performance, sound reinforcement, studio recording, class, public speaking and trainings, free your hands and mind. EASY SET UP: Plug and play, no need app or configuration, easy to use. Plug the AC adapter in the power socket, connect the receiver with your sound device, plug the headset microphone or the lapel mic into the bodypack transmitter, turn on the receiver and the transmitter, you are ready to go. The bodypack transmitter is powered by built in rechargeable battery. You can control the mic volume of Channel A and Channel B from the receiver independently. MULTI-USE APPLICATIONS: The two undirectional condenser headset microphones and lavalier lapel microphones are comfortable to wear, picking up your voice from any angle, they deliver warm, clear and loud high fidelity sound. Ideal for church, training, classroom, interview and business presentations etc. Hotec H-U25 UHF Wireless Headset/Lapel Microphone This Hotec Wireless Headset/Lapel Microphone comes with a portable receiver, 2 Bodypack transmitters, 2 headset microphones and 2 lapel microphones. It is perfect for students, people starting out on YouTube, or other live events. Wide Compatibility This Hotec professional UHF Wireless Headset/Lapel Microphone System provides clear and warm vocal sound. This wireless microphone system works with any PA, loud speaker, mixer, amplifier or karaoke machine that has mic input and mic volume control. Use a 3.5mm to ¼” adapter if it is a 3.5mm mic input. You can also use this wireless microphone system to make audio recording, interview with iPhone/Android smartphones, tablets, PC or laptops using the adapter and headphone splitters included in the box. **Note: 1. The lightning to 3.5mm adapter is needed (NOT included) if you would like to use it on iPhone 7 or above. 2. This is not designed with built-in speaker. You will need an external audio device for sound output. 3. In order to avoid feedback, please turn down the external audio device before you plug in the mini receiver and then increase the volume slowly. Supports Multiple Sets Working Together This UHF technology also allows you to use several sets together without interfere with each other, great for interviews or small groups. Spend a few minutes to select the most appropriate frequency before using this system. The content you will get in the box: Portable Mini Receiver x 1 Bodypack Transmitter x 2 Headset Microphone x 2 Lavalier Microphone x 2 USB charging cable x 1 (3 micro USB) 3.5mm to 6.35mm adapter x 1 Headphone splitter x 1 User manual x 1