Using the Singing Machine K - Box is easy. First, download the SMC Karaoke App on your device. Connect the K - Box to your TV using the video casting feature. You can also pair your Bluetooth - compatible device or connect it via LINE IN to play your music. Insert a microphone into one of the two jacks, adjust the volume as you like. When you're ready to sing, use the lead vocal - off button to remove the original vocals. The multi - colored LED lights will automatically sync with the music. For best results, place the device on a stable surface and keep the tablet in the anti - slip cradle. Remember to keep the K - Box away from water and extreme temperatures. To clean it, use a soft, dry cloth. Don't use harsh chemicals or abrasive materials. If you have any issues, refer to the user manual or contact customer support.