Two Way Connection This wireless karaoke microphone supports Bluetooth Connection & Cable Connection. Just connect your smart phone with AUX cable or Bluetooth and then start the singing APP on your phone. You are capable of have a private party at home just like in the KTV! U-Disk and TF Card Supported In addition to singing the microphone can be functioned as a music player as well. If you have a U-disk or TF card (Max 32GB NOT Included in the package) you can insert it into the microphone and listen to some beautiful music to relax yourself at spare time. Long Time Wireless Operation Configured 1800mAh rechargeable battery you can sing or play music up to 5-8 hours in a wireless manner. Free from the inconvenience of having to charge it frequently and no worry of power off until you have enough fun playing with this cute wireless microphone.