Super Sound Quality: Portable karaoke machine and 2 wireless microphones are equipped with a high-performance audio driver and an advanced digital signal processor, which make the sound clearer and bring you perfect singing experience PLAY ANY SONG: Instant Bluetoothed to your mobile devices with great stability, and play all your favorite songs from any music app like Spotify, YouTube, etc. Also support TF card (not included)playing. At the same time, plug in your headphones, sing and listen to your own singing voice, good helper for singing practice. Moreover, one key to reduce or restore vocals from Bluetooth music, sing along with the rhythm and have fun Long Playback Time: Built- in rechargeable battery, ensures 5-10 hours fun. Quicker charging, and long-time lasting. Having fun without any interruption.Birthday party, meeting, classroom, family activities, toys for girls.