HAITRAL wireless Bluetooth karaoke microphone-- specially designed for the one who love singing song. It can be a decent gift for yourself, your friends, your families! Product Features: √ Wireless karaoke microphone √ Built-in Bluetooth speaker √ Bluetooth connection, USB connection, 32G Micro SD(not included) connection. Parameter: Type: Wireless Bluetooth and wired connection(WS-858) Audio Connection: 3.5mm recording audio interface Bluetooth: Support 10 m effective distance Output power: 5W one speaker Maximum sound pressure range: >115dB 1Khz THD< 1% Charging: DV5V/0.8A Frequency Response Range: 30Hz-20KHz Material: Aluminum Alloy + Plastic Batteries: Built-in 18650 lithium battery Battery Capacity: 2200mAh Use Time: about 5-10 hours Charging Time: about 3-5 hours How to use: 1. Turn on the microphone: Press the power button for 3 seconds to turn on or turn off the microphone. 2. Bluetooth connection: Open the Bluetooth on your phone and search the Bluetooth devices, select "WS-858" to connect. 3. Adjust the settings on their operating platform to fit most for your singing demand 4. Start singing, you can operation the Play/Pause, Last song/Next song on your mobile phone or the microphone.