With the APP, you can experience the effects KTV karaoke rooms and functions Multipurpose: Bluetooth speaker, Karaoke singing, Car Stereo, instrument recording, interviews, podcasting, etc. Bluetooth 4.0 technology for lower energy consumption but more stable connection and faster transmits speed, effective wireless operating distance is up to 10m. 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 percent, reduce the loss of sound quality effectively. Package Includes: 1 x Bluetooth Microphone 1 x Case 1 x USB Cable 1 x Micro USB to Audio Cable 1 x User Manual