4 In 1 Karaoke Bluetooth Microphone - The excellent diamond design of our karaoke wireless microphone is very suitable for your hand, which can make you feel more comfortable. And the built-in high-quality Bluetooth module can be used microphone, Bluetooth speaker, loudspeaker, recorder. Mini home KTV for music playing and singing at any time. compatible with various singing applications Two Ways Connection Bluetooth Connection & Cable Connection. You just need to connect your phone with cable or Bluetooth, and then open the singing APP on your phone. The built-in clearly audio and vividly sound effect can make you listening and singing anytime and anywhere. Quality Audio SoundProfessional audio processor and tuning system, DSP noise reduction chip , Heart-type sound pickup, 360o independent sealing cavity creating a stunning KTV live-sound environment and wonderful echo reverberation. The product supports one-click silencing, two kinds of sound effect switching, four kinds of change sound, real-time ear-back monitoring Long Playing Time 2000mAh rechargeable multi-protect lithium battery ensures a longer sing time. Quicker charging, long-time lasting. A unique gift for children and adults and an ideal gift for Christmas, celebrations and parties. High Compatibility Multi-function buttons, easy to switch to different model, adjust volume, sing and play music. With echo model,our karaoke wireless microphone can bring a surrounding immersion. And the USB port allows you to plug USB, turn this magic piece to MP3, and play it directly. Supporting micro SD card max 32GB(NOT INCLUDED) and song switch. The Bluetooth has a great distance of connection(10m)