Bluetooth 4.0 Technology for lower energy consumption but more stable connection and faster transmits speed, effective wireless operating distance is up to 10m. Bring awesome effect,Noise cancellation function wireless capacitive microphone, you can enjoy singing wonderful music by yourself. Bluetooth wireless design for connecting to any Bluetooth enabled smart devices. Distortion is less than 0.5, Reduce the loss of sound effectively. Phone Support: Supports Connecting to Android, Apple systems. Comes with the APP, you can experience the effects KTV karaoke rooms and functions. Multipurpose: Bluetooth speaker, Karaoke singing, Car Stereo, instrument recording, interviews, podcasting 3 Layers material for Noise reduction Out layer: Broad metal mesh plated,the solution of the outdoor singing or speech, no matter there is a party, picnic or other outdoor activities, BS-583 Bluetooth microphone makes it so easy to increase the voice sound and the karaoke effect makes the singing and speech much more impressed and enjoyable, this is a must-have tool during the outdoor entertainments. Inbult FM.