Durable and long-lasting battery: The Bluetooth microphone is made of durable aluminum alloy to withstand drops, impacts and accidents. Built-in long-lasting protective lithium battery (18650), ensuring continuous singing time of 4-6 hours and music playback time of 12 hours. Easy-to-use karaoke microphone and two-way connection: Multi-function button can adjust music, echo, volume, change previous and next song mode. The children's microphone can be easily connected to your smartphone via data cable and Bluetooth to starthe singing application on the phone, and can also support TF cards and USB flash drives to listen to music. (not included) Excellent sound quality: Equipped with a booth-type speaker composed of large dynamic drivers, it provides HiFi sound quality, deep bass and 3D surround sound, giving you the feeling of listening to a concert on stage and giving you real sound. Built-in high-definition microphone can keep the sound real while minimizing environmental noise, so your voice is always clear and crisp Multifunctional karaoke machine: multiple modes to choose from, wireless microphone, Bluetooth speaker, music player, wireless radio, and tape recorder. Multi-function buttons make it easy to adjust music, microphone and echo volumes.5. Great gift:Beautiful appearance and comfortable feel, suitable for children and adults. Very suitable for KTV singing, party singing, family singing, travel singing, car broadcasting, musical instrument recording, interviews and scenes, etc.