* UHF wireless microphones with USB receiver, no need to set up, plug and play, suitable for computers, laptops, TVs and devices with USB ports, so that you will never have cable messy when you sing live * Microphone and receiver adopt UHF connection technology. Wider frequency range, less interference, perfect display of your voice. Long-distance wireless transmission, indoor use range 50 feet (outdoor use range 100 feet) * Multi-function setting: each microphone has 10 channels to choose from (CH01-CH10), 8-level volume adjustment, 8-level reverberation depth adjustment. * Suitable for all apps, such as Youtube/Twitch/Fackbook, etc. Can also be used for in-game dialogue (compatible with Mac, Windows Vista, XP) Can be used on all computers and TVs with USB。Can be used with 3.5mm and 6.35mm female interface devices. Suitable for mixing console/power amplifier/bluetooth speaker, etc. * To use the microphone, you need to install 2 AA batteries. Due to the prohibition on transporting the batteries, no batteries are included in the package. The display screen can display the battery power and signal strength in real time, reminding you to replace the battery in time * Customer service, 30 days cost return and exchange. We are an established and innovative company. Maintaining and improving product quality is our duty and our purpose. Each product has been repeatedly tested before leaving the factory. If you have any questions about our microphone, please be sure to contact u