Clear sound can be achieved because the microphone adopts imported single microphone core directivity that helps effectively reduce ambient noise. You can freely choose 225 FM wireless transmission channels that covers all frequency bands of (87-108MHZ). Besides, you can set the transmission frequency through the frequency adjustment button, so broadcast interference can be completely gotten rid of, and multiple stations simultaneous use are supported. It is made of high-quality plastic and metal materials, which is very durable. The cable length of the product is 30cm. With 3.5mm jack, the microphone is compatible for iPhone, for iPad, for Android and for Windows smartphone, tablet and many more smart devices. And it is suitable for stage performances, shows, dancing and singing, teaching, etc. Item Name: Microphone Material: Plastic, Metal Wireless Distance: 15-20 Meters Frequency Response: 20Hz-20000Hz Battery Capacity: 300mAh (Included) Battery Life: 12 Hours Features: Anti-interference, Clear Sound, Long Battery Life Size Details: Cable Length: 30cm/11.81" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Microphone