Using this Singing Machine Mini Sparkle Bluetooth Karaoke Speaker is a piece of cake. First, turn on the speaker and pair it with your Bluetooth device like a phone or tablet. Then, choose your favorite karaoke song and start singing. You can use the six voice - changing effects by pressing the corresponding buttons on the speaker to add more fun to your performance. To use the lead vocal - off feature, just switch it on, and your voice will be the star. You can record your singing by pressing the record button and play it back later. The light show will start automatically and sync with the music. When using the two wireless microphones, make sure they are within range. For maintenance, keep the speaker clean by wiping it with a soft, dry cloth. Don't expose it to water or extreme temperatures. And remember, this speaker is for users aged 5 and up, so keep it away from younger kids to avoid any accidents.