The RockJam Bluetooth karaoke machine comes with two karaoke microphones, has inbuilt LED lights, an integrated rechargeable battery, three methods of playback, voice-changing effects, and a powerful 10-watt speaker. This karaoke equipment is lightweight and highly portable, the integrated battery means that it can be transported anywhere, making it the ideal karaoke machine for kids who wish to share their performances. The battery which is charged by USB (cable included,) will provide up to four hours of playback on a single charge. For those who are too shy to perform, the voice-changing effects and the two karaoke microphones provide a great route to build confidence and experience the joy of singing as someone else, or as a couple. For those who wish to show off, the inbuilt LED’s will light up any performance as they move in time to the music but they can be turned off for those who don’t wish to distract from their performance. Playback is provided by Bluetooth, AUX, and USB (MP3 playback) so you are sure to never run out of songs. You can even connect this speaker as the output to your smart TV making it the ideal karaoke machine for adults who wish to create the full traditional karaoke party experience and have lyrics on display.