Hi-Fi Speaker Sound & Consender Microphones：The karaoke machine applys Hi-fi surround sound speaker, loud and clear, the consender microphone will give you an excellent Audio experience. Support Different Music Resources: The karaoke machine with 2 microphones supports bluetooth, usb stick, TF card,Aux cable the get the music resource. And when connect it through bluetooth, it supports different bluetooth mobile device like TV, mobile phone, pad, computer, laptop. Large Battery Capacity: The machine is built in about 3000mAh rechargeable Lithium battery that supports continuously work for about 8 hours or standby about 24 hours, Very suitable for outside playing. It takes 4 hours to charge fully and in order to protect the battery life, suggest to charge it occasionally when you don't use it for a long time. Strudy Wooden Body: The Karaoke speaker is made of high density strudy wood with round safe edges, which will last longer for kids to play. Enjoy Music's Fun: It is portable and easy to carry, built in 3000mAh large capacity battery and work for long time. it supports 2 microphones to sing at the same time, good for kids to enjoy at a party. PRODUCT & PRICE WARRANTY：Our brand product has product and price warranty, any defective and unsatisfaction when using it, freely contact us to solve. And we had price guarantee, you can contact us if you bought at a more expensive price than our current price.