Brand :Smartberry M8 Item :Microphone&Speaker Output Power :3W * 2 Bluetooth :4.0 Frequency Range :100Hz-10kHz Battery Capacity :2100mAh Playing Time :5 hours Standby Time :24hours If you love Karaoke, you will love the Smartberry M8 wireless microphone and speaker.It allows you to sing and play music anywhere. It offers quality music, making it a great option for parties. Bluetooth connection and wired connection Simply connect your phone with a wire or Bluetooth, then open the Sing app on your phone it can make you sound effects, merging, listening and singing anytime and anywhere Easy to use: multifunction buttons, easy to switch to different models, adjust volume, sing and play music With echo models, the karaoke microphone can provide ambient immersion. The USB port allows you to connect USB convert this ma plece in MP3 format and play it directly Superior sound and top quality speaker • Integrated loudspeaker, with three-layer filter to prevent cracking or cracking Enjoy crystal clear and perfect sound, clear high tones and super comfort.